393089920

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{19813}}^1$

素因数の和:19863

約数の個数: 64

約数和(自身を含む): 970093440

約数和(自身を除く): 577003520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 19813, 19840, 39626, 79252, 99065, 158504, 198130, 317008, 396260, 614203, 634016, 792520, 1228406, 1268032, 1585040, 2456812, 2536064, 3071015, 3170080, 4913624, 6142030, 6340160, 9827248, 12284060, 12680320, 19654496, 24568120, 39308992, 49136240, 78617984, 98272480, 196544960, 393089920]

約数ペア:

[(1, 393089920), (2, 196544960), (4, 98272480), (5, 78617984), (8, 49136240), (10, 39308992), (16, 24568120), (20, 19654496), (31, 12680320), (32, 12284060), (40, 9827248), (62, 6340160), (64, 6142030), (80, 4913624), (124, 3170080), (128, 3071015), (155, 2536064), (160, 2456812), (248, 1585040), (310, 1268032), (320, 1228406), (496, 792520), (620, 634016), (640, 614203), (992, 396260), (1240, 317008), (1984, 198130), (2480, 158504), (3968, 99065), (4960, 79252), (9920, 39626), (19813, 19840)]