404784640

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12163}}^1$

素因数の和:12199

約数の個数: 80

約数和(自身を含む): 1045276848

約数和(自身を除く): 640492208

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 832, 1040, 1280, 1664, 2080, 2560, 3328, 4160, 6656, 8320, 12163, 16640, 24326, 33280, 48652, 60815, 97304, 121630, 158119, 194608, 243260, 316238, 389216, 486520, 632476, 778432, 790595, 973040, 1264952, 1556864, 1581190, 1946080, 2529904, 3113728, 3162380, 3892160, 5059808, 6227456, 6324760, 7784320, 10119616, 12649520, 15568640, 20239232, 25299040, 31137280, 40478464, 50598080, 80956928, 101196160, 202392320, 404784640]

約数ペア:

[(1, 404784640), (2, 202392320), (4, 101196160), (5, 80956928), (8, 50598080), (10, 40478464), (13, 31137280), (16, 25299040), (20, 20239232), (26, 15568640), (32, 12649520), (40, 10119616), (52, 7784320), (64, 6324760), (65, 6227456), (80, 5059808), (104, 3892160), (128, 3162380), (130, 3113728), (160, 2529904), (208, 1946080), (256, 1581190), (260, 1556864), (320, 1264952), (416, 973040), (512, 790595), (520, 778432), (640, 632476), (832, 486520), (1040, 389216), (1280, 316238), (1664, 243260), (2080, 194608), (2560, 158119), (3328, 121630), (4160, 97304), (6656, 60815), (8320, 48652), (12163, 33280), (16640, 24326)]