19408720

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:212

約数の個数: 80

約数和(自身を含む): 47496960

約数和(自身を除く): 28088240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 79, 80, 83, 148, 158, 166, 185, 296, 316, 332, 370, 395, 415, 592, 632, 664, 740, 790, 830, 1264, 1328, 1480, 1580, 1660, 2923, 2960, 3071, 3160, 3320, 5846, 6142, 6320, 6557, 6640, 11692, 12284, 13114, 14615, 15355, 23384, 24568, 26228, 29230, 30710, 32785, 46768, 49136, 52456, 58460, 61420, 65570, 104912, 116920, 122840, 131140, 233840, 242609, 245680, 262280, 485218, 524560, 970436, 1213045, 1940872, 2426090, 3881744, 4852180, 9704360, 19408720]

約数ペア:

[(1, 19408720), (2, 9704360), (4, 4852180), (5, 3881744), (8, 2426090), (10, 1940872), (16, 1213045), (20, 970436), (37, 524560), (40, 485218), (74, 262280), (79, 245680), (80, 242609), (83, 233840), (148, 131140), (158, 122840), (166, 116920), (185, 104912), (296, 65570), (316, 61420), (332, 58460), (370, 52456), (395, 49136), (415, 46768), (592, 32785), (632, 30710), (664, 29230), (740, 26228), (790, 24568), (830, 23384), (1264, 15355), (1328, 14615), (1480, 13114), (1580, 12284), (1660, 11692), (2923, 6640), (2960, 6557), (3071, 6320), (3160, 6142), (3320, 5846)]