121212990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:319

約数の個数: 128

約数和(自身を含む): 342144000

約数和(自身を除く): 220931010

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 27, 30, 45, 46, 54, 69, 90, 115, 131, 135, 138, 149, 207, 230, 262, 270, 298, 345, 393, 414, 447, 621, 655, 690, 745, 786, 894, 1035, 1179, 1242, 1310, 1341, 1490, 1965, 2070, 2235, 2358, 2682, 3013, 3105, 3427, 3537, 3930, 4023, 4470, 5895, 6026, 6210, 6705, 6854, 7074, 8046, 9039, 10281, 11790, 13410, 15065, 17135, 17685, 18078, 19519, 20115, 20562, 27117, 30130, 30843, 34270, 35370, 39038, 40230, 45195, 51405, 54234, 58557, 61686, 81351, 90390, 92529, 97595, 102810, 117114, 135585, 154215, 162702, 175671, 185058, 195190, 271170, 292785, 308430, 351342, 406755, 448937, 462645, 527013, 585570, 813510, 878355, 897874, 925290, 1054026, 1346811, 1756710, 2244685, 2635065, 2693622, 4040433, 4489370, 5270130, 6734055, 8080866, 12121299, 13468110, 20202165, 24242598, 40404330, 60606495, 121212990]

約数ペア:

[(1, 121212990), (2, 60606495), (3, 40404330), (5, 24242598), (6, 20202165), (9, 13468110), (10, 12121299), (15, 8080866), (18, 6734055), (23, 5270130), (27, 4489370), (30, 4040433), (45, 2693622), (46, 2635065), (54, 2244685), (69, 1756710), (90, 1346811), (115, 1054026), (131, 925290), (135, 897874), (138, 878355), (149, 813510), (207, 585570), (230, 527013), (262, 462645), (270, 448937), (298, 406755), (345, 351342), (393, 308430), (414, 292785), (447, 271170), (621, 195190), (655, 185058), (690, 175671), (745, 162702), (786, 154215), (894, 135585), (1035, 117114), (1179, 102810), (1242, 97595), (1310, 92529), (1341, 90390), (1490, 81351), (1965, 61686), (2070, 58557), (2235, 54234), (2358, 51405), (2682, 45195), (3013, 40230), (3105, 39038), (3427, 35370), (3537, 34270), (3930, 30843), (4023, 30130), (4470, 27117), (5895, 20562), (6026, 20115), (6210, 19519), (6705, 18078), (6854, 17685), (7074, 17135), (8046, 15065), (9039, 13410), (10281, 11790)]