280378980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{383}}^1$

素因数の和:495

約数の個数: 216

約数和(自身を含む): 1003871232

約数和(自身を除く): 723492252

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 83, 84, 90, 98, 105, 126, 140, 147, 166, 180, 196, 210, 245, 249, 252, 294, 315, 332, 383, 415, 420, 441, 490, 498, 581, 588, 630, 735, 747, 766, 830, 882, 980, 996, 1149, 1162, 1245, 1260, 1470, 1494, 1532, 1660, 1743, 1764, 1915, 2205, 2298, 2324, 2490, 2681, 2905, 2940, 2988, 3447, 3486, 3735, 3830, 4067, 4410, 4596, 4980, 5229, 5362, 5745, 5810, 6894, 6972, 7470, 7660, 8043, 8134, 8715, 8820, 10458, 10724, 11490, 11620, 12201, 13405, 13788, 14940, 16086, 16268, 17235, 17430, 18767, 20335, 20916, 22980, 24129, 24402, 26145, 26810, 31789, 32172, 34470, 34860, 36603, 37534, 40215, 40670, 48258, 48804, 52290, 53620, 56301, 61005, 63578, 68940, 73206, 75068, 80430, 81340, 93835, 95367, 96516, 104580, 112602, 120645, 122010, 127156, 146412, 158945, 160860, 168903, 183015, 187670, 190734, 222523, 225204, 241290, 244020, 281505, 286101, 317890, 337806, 366030, 375340, 381468, 445046, 476835, 482580, 563010, 572202, 635780, 667569, 675612, 732060, 844515, 890092, 953670, 1112615, 1126020, 1144404, 1335138, 1430505, 1557661, 1689030, 1907340, 2002707, 2225230, 2670276, 2861010, 3115322, 3337845, 3378060, 4005414, 4450460, 4672983, 5722020, 6230644, 6675690, 7788305, 8010828, 9345966, 10013535, 13351380, 14018949, 15576610, 18691932, 20027070, 23364915, 28037898, 31153220, 40054140, 46729830, 56075796, 70094745, 93459660, 140189490, 280378980]

約数ペア:

[(1, 280378980), (2, 140189490), (3, 93459660), (4, 70094745), (5, 56075796), (6, 46729830), (7, 40054140), (9, 31153220), (10, 28037898), (12, 23364915), (14, 20027070), (15, 18691932), (18, 15576610), (20, 14018949), (21, 13351380), (28, 10013535), (30, 9345966), (35, 8010828), (36, 7788305), (42, 6675690), (45, 6230644), (49, 5722020), (60, 4672983), (63, 4450460), (70, 4005414), (83, 3378060), (84, 3337845), (90, 3115322), (98, 2861010), (105, 2670276), (126, 2225230), (140, 2002707), (147, 1907340), (166, 1689030), (180, 1557661), (196, 1430505), (210, 1335138), (245, 1144404), (249, 1126020), (252, 1112615), (294, 953670), (315, 890092), (332, 844515), (383, 732060), (415, 675612), (420, 667569), (441, 635780), (490, 572202), (498, 563010), (581, 482580), (588, 476835), (630, 445046), (735, 381468), (747, 375340), (766, 366030), (830, 337806), (882, 317890), (980, 286101), (996, 281505), (1149, 244020), (1162, 241290), (1245, 225204), (1260, 222523), (1470, 190734), (1494, 187670), (1532, 183015), (1660, 168903), (1743, 160860), (1764, 158945), (1915, 146412), (2205, 127156), (2298, 122010), (2324, 120645), (2490, 112602), (2681, 104580), (2905, 96516), (2940, 95367), (2988, 93835), (3447, 81340), (3486, 80430), (3735, 75068), (3830, 73206), (4067, 68940), (4410, 63578), (4596, 61005), (4980, 56301), (5229, 53620), (5362, 52290), (5745, 48804), (5810, 48258), (6894, 40670), (6972, 40215), (7470, 37534), (7660, 36603), (8043, 34860), (8134, 34470), (8715, 32172), (8820, 31789), (10458, 26810), (10724, 26145), (11490, 24402), (11620, 24129), (12201, 22980), (13405, 20916), (13788, 20335), (14940, 18767), (16086, 17430), (16268, 17235)]