18928980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{181}}^1$

素因数の和:286

約数の個数: 144

約数和(自身を含む): 66777984

約数和(自身を除く): 47849004

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 83, 84, 90, 105, 126, 140, 166, 180, 181, 210, 249, 252, 315, 332, 362, 415, 420, 498, 543, 581, 630, 724, 747, 830, 905, 996, 1086, 1162, 1245, 1260, 1267, 1494, 1629, 1660, 1743, 1810, 2172, 2324, 2490, 2534, 2715, 2905, 2988, 3258, 3486, 3620, 3735, 3801, 4980, 5068, 5229, 5430, 5810, 6335, 6516, 6972, 7470, 7602, 8145, 8715, 10458, 10860, 11403, 11620, 12670, 14940, 15023, 15204, 16290, 17430, 19005, 20916, 22806, 25340, 26145, 30046, 32580, 34860, 38010, 45069, 45612, 52290, 57015, 60092, 75115, 76020, 90138, 104580, 105161, 114030, 135207, 150230, 180276, 210322, 225345, 228060, 270414, 300460, 315483, 420644, 450690, 525805, 540828, 630966, 676035, 901380, 946449, 1051610, 1261932, 1352070, 1577415, 1892898, 2103220, 2704140, 3154830, 3785796, 4732245, 6309660, 9464490, 18928980]

約数ペア:

[(1, 18928980), (2, 9464490), (3, 6309660), (4, 4732245), (5, 3785796), (6, 3154830), (7, 2704140), (9, 2103220), (10, 1892898), (12, 1577415), (14, 1352070), (15, 1261932), (18, 1051610), (20, 946449), (21, 901380), (28, 676035), (30, 630966), (35, 540828), (36, 525805), (42, 450690), (45, 420644), (60, 315483), (63, 300460), (70, 270414), (83, 228060), (84, 225345), (90, 210322), (105, 180276), (126, 150230), (140, 135207), (166, 114030), (180, 105161), (181, 104580), (210, 90138), (249, 76020), (252, 75115), (315, 60092), (332, 57015), (362, 52290), (415, 45612), (420, 45069), (498, 38010), (543, 34860), (581, 32580), (630, 30046), (724, 26145), (747, 25340), (830, 22806), (905, 20916), (996, 19005), (1086, 17430), (1162, 16290), (1245, 15204), (1260, 15023), (1267, 14940), (1494, 12670), (1629, 11620), (1660, 11403), (1743, 10860), (1810, 10458), (2172, 8715), (2324, 8145), (2490, 7602), (2534, 7470), (2715, 6972), (2905, 6516), (2988, 6335), (3258, 5810), (3486, 5430), (3620, 5229), (3735, 5068), (3801, 4980)]