20040720

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:253

約数の個数: 160

約数和(自身を含む): 72376320

約数和(自身を除く): 52335600

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, 79, 80, 84, 105, 112, 120, 140, 151, 158, 168, 210, 237, 240, 280, 302, 316, 336, 395, 420, 453, 474, 553, 560, 604, 632, 755, 790, 840, 906, 948, 1057, 1106, 1185, 1208, 1264, 1510, 1580, 1659, 1680, 1812, 1896, 2114, 2212, 2265, 2370, 2416, 2765, 3020, 3160, 3171, 3318, 3624, 3792, 4228, 4424, 4530, 4740, 5285, 5530, 6040, 6320, 6342, 6636, 7248, 8295, 8456, 8848, 9060, 9480, 10570, 11060, 11929, 12080, 12684, 13272, 15855, 16590, 16912, 18120, 18960, 21140, 22120, 23858, 25368, 26544, 31710, 33180, 35787, 36240, 42280, 44240, 47716, 50736, 59645, 63420, 66360, 71574, 83503, 84560, 95432, 119290, 126840, 132720, 143148, 167006, 178935, 190864, 238580, 250509, 253680, 286296, 334012, 357870, 417515, 477160, 501018, 572592, 668024, 715740, 835030, 954320, 1002036, 1252545, 1336048, 1431480, 1670060, 2004072, 2505090, 2862960, 3340120, 4008144, 5010180, 6680240, 10020360, 20040720]

約数ペア:

[(1, 20040720), (2, 10020360), (3, 6680240), (4, 5010180), (5, 4008144), (6, 3340120), (7, 2862960), (8, 2505090), (10, 2004072), (12, 1670060), (14, 1431480), (15, 1336048), (16, 1252545), (20, 1002036), (21, 954320), (24, 835030), (28, 715740), (30, 668024), (35, 572592), (40, 501018), (42, 477160), (48, 417515), (56, 357870), (60, 334012), (70, 286296), (79, 253680), (80, 250509), (84, 238580), (105, 190864), (112, 178935), (120, 167006), (140, 143148), (151, 132720), (158, 126840), (168, 119290), (210, 95432), (237, 84560), (240, 83503), (280, 71574), (302, 66360), (316, 63420), (336, 59645), (395, 50736), (420, 47716), (453, 44240), (474, 42280), (553, 36240), (560, 35787), (604, 33180), (632, 31710), (755, 26544), (790, 25368), (840, 23858), (906, 22120), (948, 21140), (1057, 18960), (1106, 18120), (1185, 16912), (1208, 16590), (1264, 15855), (1510, 13272), (1580, 12684), (1659, 12080), (1680, 11929), (1812, 11060), (1896, 10570), (2114, 9480), (2212, 9060), (2265, 8848), (2370, 8456), (2416, 8295), (2765, 7248), (3020, 6636), (3160, 6342), (3171, 6320), (3318, 6040), (3624, 5530), (3792, 5285), (4228, 4740), (4424, 4530)]