21452640

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1$

素因数の和:285

約数の個数: 192

約数和(自身を含む): 78382080

約数和(自身を除く): 56929440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 17, 20, 22, 24, 30, 32, 33, 34, 40, 44, 48, 51, 55, 60, 66, 68, 80, 85, 88, 96, 102, 110, 120, 132, 136, 160, 165, 170, 176, 187, 204, 220, 239, 240, 255, 264, 272, 330, 340, 352, 374, 408, 440, 478, 480, 510, 528, 544, 561, 660, 680, 717, 748, 816, 880, 935, 956, 1020, 1056, 1122, 1195, 1320, 1360, 1434, 1496, 1632, 1760, 1870, 1912, 2040, 2244, 2390, 2629, 2640, 2720, 2805, 2868, 2992, 3585, 3740, 3824, 4063, 4080, 4488, 4780, 5258, 5280, 5610, 5736, 5984, 7170, 7480, 7648, 7887, 8126, 8160, 8976, 9560, 10516, 11220, 11472, 12189, 13145, 14340, 14960, 15774, 16252, 17952, 19120, 20315, 21032, 22440, 22944, 24378, 26290, 28680, 29920, 31548, 32504, 38240, 39435, 40630, 42064, 44693, 44880, 48756, 52580, 57360, 60945, 63096, 65008, 78870, 81260, 84128, 89386, 89760, 97512, 105160, 114720, 121890, 126192, 130016, 134079, 157740, 162520, 178772, 195024, 210320, 223465, 243780, 252384, 268158, 315480, 325040, 357544, 390048, 420640, 446930, 487560, 536316, 630960, 650080, 670395, 715088, 893860, 975120, 1072632, 1261920, 1340790, 1430176, 1787720, 1950240, 2145264, 2681580, 3575440, 4290528, 5363160, 7150880, 10726320, 21452640]

約数ペア:

[(1, 21452640), (2, 10726320), (3, 7150880), (4, 5363160), (5, 4290528), (6, 3575440), (8, 2681580), (10, 2145264), (11, 1950240), (12, 1787720), (15, 1430176), (16, 1340790), (17, 1261920), (20, 1072632), (22, 975120), (24, 893860), (30, 715088), (32, 670395), (33, 650080), (34, 630960), (40, 536316), (44, 487560), (48, 446930), (51, 420640), (55, 390048), (60, 357544), (66, 325040), (68, 315480), (80, 268158), (85, 252384), (88, 243780), (96, 223465), (102, 210320), (110, 195024), (120, 178772), (132, 162520), (136, 157740), (160, 134079), (165, 130016), (170, 126192), (176, 121890), (187, 114720), (204, 105160), (220, 97512), (239, 89760), (240, 89386), (255, 84128), (264, 81260), (272, 78870), (330, 65008), (340, 63096), (352, 60945), (374, 57360), (408, 52580), (440, 48756), (478, 44880), (480, 44693), (510, 42064), (528, 40630), (544, 39435), (561, 38240), (660, 32504), (680, 31548), (717, 29920), (748, 28680), (816, 26290), (880, 24378), (935, 22944), (956, 22440), (1020, 21032), (1056, 20315), (1122, 19120), (1195, 17952), (1320, 16252), (1360, 15774), (1434, 14960), (1496, 14340), (1632, 13145), (1760, 12189), (1870, 11472), (1912, 11220), (2040, 10516), (2244, 9560), (2390, 8976), (2629, 8160), (2640, 8126), (2720, 7887), (2805, 7648), (2868, 7480), (2992, 7170), (3585, 5984), (3740, 5736), (3824, 5610), (4063, 5280), (4080, 5258), (4488, 4780)]