21512260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{229}}^1$

素因数の和:317

約数の個数: 96

約数和(自身を含む): 57496320

約数和(自身を除く): 35984060

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 61, 70, 77, 110, 122, 140, 154, 220, 229, 244, 305, 308, 385, 427, 458, 610, 671, 770, 854, 916, 1145, 1220, 1342, 1540, 1603, 1708, 2135, 2290, 2519, 2684, 3206, 3355, 4270, 4580, 4697, 5038, 6412, 6710, 8015, 8540, 9394, 10076, 12595, 13420, 13969, 16030, 17633, 18788, 23485, 25190, 27938, 32060, 35266, 46970, 50380, 55876, 69845, 70532, 88165, 93940, 97783, 139690, 153659, 176330, 195566, 279380, 307318, 352660, 391132, 488915, 614636, 768295, 977830, 1075613, 1536590, 1955660, 2151226, 3073180, 4302452, 5378065, 10756130, 21512260]

約数ペア:

[(1, 21512260), (2, 10756130), (4, 5378065), (5, 4302452), (7, 3073180), (10, 2151226), (11, 1955660), (14, 1536590), (20, 1075613), (22, 977830), (28, 768295), (35, 614636), (44, 488915), (55, 391132), (61, 352660), (70, 307318), (77, 279380), (110, 195566), (122, 176330), (140, 153659), (154, 139690), (220, 97783), (229, 93940), (244, 88165), (305, 70532), (308, 69845), (385, 55876), (427, 50380), (458, 46970), (610, 35266), (671, 32060), (770, 27938), (854, 25190), (916, 23485), (1145, 18788), (1220, 17633), (1342, 16030), (1540, 13969), (1603, 13420), (1708, 12595), (2135, 10076), (2290, 9394), (2519, 8540), (2684, 8015), (3206, 6710), (3355, 6412), (4270, 5038), (4580, 4697)]