20313540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8681}}^1$

素因数の和:8709

約数の個数: 72

約数和(自身を含む): 66365208

約数和(自身を除く): 46051668

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8681, 17362, 26043, 34724, 43405, 52086, 78129, 86810, 104172, 112853, 130215, 156258, 173620, 225706, 260430, 312516, 338559, 390645, 451412, 520860, 564265, 677118, 781290, 1015677, 1128530, 1354236, 1562580, 1692795, 2031354, 2257060, 3385590, 4062708, 5078385, 6771180, 10156770, 20313540]

約数ペア:

[(1, 20313540), (2, 10156770), (3, 6771180), (4, 5078385), (5, 4062708), (6, 3385590), (9, 2257060), (10, 2031354), (12, 1692795), (13, 1562580), (15, 1354236), (18, 1128530), (20, 1015677), (26, 781290), (30, 677118), (36, 564265), (39, 520860), (45, 451412), (52, 390645), (60, 338559), (65, 312516), (78, 260430), (90, 225706), (117, 173620), (130, 156258), (156, 130215), (180, 112853), (195, 104172), (234, 86810), (260, 78129), (390, 52086), (468, 43405), (585, 34724), (780, 26043), (1170, 17362), (2340, 8681)]