657470320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{20393}}^1$

素因数の和:20450

約数の個数: 80

約数和(自身を含む): 1699391232

約数和(自身を除く): 1041920912

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 8060, 16120, 20393, 32240, 40786, 81572, 101965, 163144, 203930, 265109, 326288, 407860, 530218, 632183, 815720, 1060436, 1264366, 1325545, 1631440, 2120872, 2528732, 2651090, 3160915, 4241744, 5057464, 5302180, 6321830, 8218379, 10114928, 10604360, 12643660, 16436758, 21208720, 25287320, 32873516, 41091895, 50574640, 65747032, 82183790, 131494064, 164367580, 328735160, 657470320]

約数ペア:

[(1, 657470320), (2, 328735160), (4, 164367580), (5, 131494064), (8, 82183790), (10, 65747032), (13, 50574640), (16, 41091895), (20, 32873516), (26, 25287320), (31, 21208720), (40, 16436758), (52, 12643660), (62, 10604360), (65, 10114928), (80, 8218379), (104, 6321830), (124, 5302180), (130, 5057464), (155, 4241744), (208, 3160915), (248, 2651090), (260, 2528732), (310, 2120872), (403, 1631440), (496, 1325545), (520, 1264366), (620, 1060436), (806, 815720), (1040, 632183), (1240, 530218), (1612, 407860), (2015, 326288), (2480, 265109), (3224, 203930), (4030, 163144), (6448, 101965), (8060, 81572), (16120, 40786), (20393, 32240)]