638771280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{523}}^1\times {\mathrm{727}}^1$

素因数の和:1273

約数の個数: 160

約数和(自身を含む): 2270521344

約数和(自身を除く): 1631750064

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 523, 560, 727, 840, 1046, 1454, 1569, 1680, 2092, 2181, 2615, 2908, 3138, 3635, 3661, 4184, 4362, 5089, 5230, 5816, 6276, 7270, 7322, 7845, 8368, 8724, 10178, 10460, 10905, 10983, 11632, 12552, 14540, 14644, 15267, 15690, 17448, 18305, 20356, 20920, 21810, 21966, 25104, 25445, 29080, 29288, 30534, 31380, 34896, 36610, 40712, 41840, 43620, 43932, 50890, 54915, 58160, 58576, 61068, 62760, 73220, 76335, 81424, 87240, 87864, 101780, 109830, 122136, 125520, 146440, 152670, 174480, 175728, 203560, 219660, 244272, 292880, 305340, 380221, 407120, 439320, 610680, 760442, 878640, 1140663, 1221360, 1520884, 1901105, 2281326, 2661547, 3041768, 3802210, 4562652, 5323094, 5703315, 6083536, 7604420, 7984641, 9125304, 10646188, 11406630, 13307735, 15208840, 15969282, 18250608, 21292376, 22813260, 26615470, 30417680, 31938564, 39923205, 42584752, 45626520, 53230940, 63877128, 79846410, 91253040, 106461880, 127754256, 159692820, 212923760, 319385640, 638771280]

約数ペア:

[(1, 638771280), (2, 319385640), (3, 212923760), (4, 159692820), (5, 127754256), (6, 106461880), (7, 91253040), (8, 79846410), (10, 63877128), (12, 53230940), (14, 45626520), (15, 42584752), (16, 39923205), (20, 31938564), (21, 30417680), (24, 26615470), (28, 22813260), (30, 21292376), (35, 18250608), (40, 15969282), (42, 15208840), (48, 13307735), (56, 11406630), (60, 10646188), (70, 9125304), (80, 7984641), (84, 7604420), (105, 6083536), (112, 5703315), (120, 5323094), (140, 4562652), (168, 3802210), (210, 3041768), (240, 2661547), (280, 2281326), (336, 1901105), (420, 1520884), (523, 1221360), (560, 1140663), (727, 878640), (840, 760442), (1046, 610680), (1454, 439320), (1569, 407120), (1680, 380221), (2092, 305340), (2181, 292880), (2615, 244272), (2908, 219660), (3138, 203560), (3635, 175728), (3661, 174480), (4184, 152670), (4362, 146440), (5089, 125520), (5230, 122136), (5816, 109830), (6276, 101780), (7270, 87864), (7322, 87240), (7845, 81424), (8368, 76335), (8724, 73220), (10178, 62760), (10460, 61068), (10905, 58576), (10983, 58160), (11632, 54915), (12552, 50890), (14540, 43932), (14644, 43620), (15267, 41840), (15690, 40712), (17448, 36610), (18305, 34896), (20356, 31380), (20920, 30534), (21810, 29288), (21966, 29080), (25104, 25445)]