81648320

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1033}}^1$

素因数の和:1082

約数の個数: 112

約数和(自身を含む): 220614240

約数和(自身を除く): 138965920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 64, 65, 76, 80, 95, 104, 130, 152, 160, 190, 208, 247, 260, 304, 320, 380, 416, 494, 520, 608, 760, 832, 988, 1033, 1040, 1216, 1235, 1520, 1976, 2066, 2080, 2470, 3040, 3952, 4132, 4160, 4940, 5165, 6080, 7904, 8264, 9880, 10330, 13429, 15808, 16528, 19627, 19760, 20660, 26858, 33056, 39254, 39520, 41320, 53716, 66112, 67145, 78508, 79040, 82640, 98135, 107432, 134290, 157016, 165280, 196270, 214864, 255151, 268580, 314032, 330560, 392540, 429728, 510302, 537160, 628064, 785080, 859456, 1020604, 1074320, 1256128, 1275755, 1570160, 2041208, 2148640, 2551510, 3140320, 4082416, 4297280, 5103020, 6280640, 8164832, 10206040, 16329664, 20412080, 40824160, 81648320]

約数ペア:

[(1, 81648320), (2, 40824160), (4, 20412080), (5, 16329664), (8, 10206040), (10, 8164832), (13, 6280640), (16, 5103020), (19, 4297280), (20, 4082416), (26, 3140320), (32, 2551510), (38, 2148640), (40, 2041208), (52, 1570160), (64, 1275755), (65, 1256128), (76, 1074320), (80, 1020604), (95, 859456), (104, 785080), (130, 628064), (152, 537160), (160, 510302), (190, 429728), (208, 392540), (247, 330560), (260, 314032), (304, 268580), (320, 255151), (380, 214864), (416, 196270), (494, 165280), (520, 157016), (608, 134290), (760, 107432), (832, 98135), (988, 82640), (1033, 79040), (1040, 78508), (1216, 67145), (1235, 66112), (1520, 53716), (1976, 41320), (2066, 39520), (2080, 39254), (2470, 33056), (3040, 26858), (3952, 20660), (4132, 19760), (4160, 19627), (4940, 16528), (5165, 15808), (6080, 13429), (7904, 10330), (8264, 9880)]