19713720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12637}}^1$

素因数の和:12664

約数の個数: 64

約数和(自身を含む): 63695520

約数和(自身を除く): 43981800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 12637, 25274, 37911, 50548, 63185, 75822, 101096, 126370, 151644, 164281, 189555, 252740, 303288, 328562, 379110, 492843, 505480, 657124, 758220, 821405, 985686, 1314248, 1516440, 1642810, 1971372, 2464215, 3285620, 3942744, 4928430, 6571240, 9856860, 19713720]

約数ペア:

[(1, 19713720), (2, 9856860), (3, 6571240), (4, 4928430), (5, 3942744), (6, 3285620), (8, 2464215), (10, 1971372), (12, 1642810), (13, 1516440), (15, 1314248), (20, 985686), (24, 821405), (26, 758220), (30, 657124), (39, 505480), (40, 492843), (52, 379110), (60, 328562), (65, 303288), (78, 252740), (104, 189555), (120, 164281), (130, 151644), (156, 126370), (195, 101096), (260, 75822), (312, 63185), (390, 50548), (520, 37911), (780, 25274), (1560, 12637)]