18814640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{229}}^1$

素因数の和:334

約数の個数: 80

約数和(自身を含む): 47913600

約数和(自身を除く): 29098960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 79, 80, 104, 130, 158, 208, 229, 260, 316, 395, 458, 520, 632, 790, 916, 1027, 1040, 1145, 1264, 1580, 1832, 2054, 2290, 2977, 3160, 3664, 4108, 4580, 5135, 5954, 6320, 8216, 9160, 10270, 11908, 14885, 16432, 18091, 18320, 20540, 23816, 29770, 36182, 41080, 47632, 59540, 72364, 82160, 90455, 119080, 144728, 180910, 235183, 238160, 289456, 361820, 470366, 723640, 940732, 1175915, 1447280, 1881464, 2351830, 3762928, 4703660, 9407320, 18814640]

約数ペア:

[(1, 18814640), (2, 9407320), (4, 4703660), (5, 3762928), (8, 2351830), (10, 1881464), (13, 1447280), (16, 1175915), (20, 940732), (26, 723640), (40, 470366), (52, 361820), (65, 289456), (79, 238160), (80, 235183), (104, 180910), (130, 144728), (158, 119080), (208, 90455), (229, 82160), (260, 72364), (316, 59540), (395, 47632), (458, 41080), (520, 36182), (632, 29770), (790, 23816), (916, 20540), (1027, 18320), (1040, 18091), (1145, 16432), (1264, 14885), (1580, 11908), (1832, 10270), (2054, 9160), (2290, 8216), (2977, 6320), (3160, 5954), (3664, 5135), (4108, 4580)]