18161970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{331}}^1$

素因数の和:431

約数の個数: 64

約数和(自身を含む): 45895680

約数和(自身を除く): 27733710

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 59, 62, 93, 118, 155, 177, 186, 295, 310, 331, 354, 465, 590, 662, 885, 930, 993, 1655, 1770, 1829, 1986, 3310, 3658, 4965, 5487, 9145, 9930, 10261, 10974, 18290, 19529, 20522, 27435, 30783, 39058, 51305, 54870, 58587, 61566, 97645, 102610, 117174, 153915, 195290, 292935, 307830, 585870, 605399, 1210798, 1816197, 3026995, 3632394, 6053990, 9080985, 18161970]

約数ペア:

[(1, 18161970), (2, 9080985), (3, 6053990), (5, 3632394), (6, 3026995), (10, 1816197), (15, 1210798), (30, 605399), (31, 585870), (59, 307830), (62, 292935), (93, 195290), (118, 153915), (155, 117174), (177, 102610), (186, 97645), (295, 61566), (310, 58587), (331, 54870), (354, 51305), (465, 39058), (590, 30783), (662, 27435), (885, 20522), (930, 19529), (993, 18290), (1655, 10974), (1770, 10261), (1829, 9930), (1986, 9145), (3310, 5487), (3658, 4965)]