20642940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1571}}^1$

素因数の和:1659

約数の個数: 72

約数和(自身を含む): 63515088

約数和(自身を除く): 42872148

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 73, 90, 146, 180, 219, 292, 365, 438, 657, 730, 876, 1095, 1314, 1460, 1571, 2190, 2628, 3142, 3285, 4380, 4713, 6284, 6570, 7855, 9426, 13140, 14139, 15710, 18852, 23565, 28278, 31420, 47130, 56556, 70695, 94260, 114683, 141390, 229366, 282780, 344049, 458732, 573415, 688098, 1032147, 1146830, 1376196, 1720245, 2064294, 2293660, 3440490, 4128588, 5160735, 6880980, 10321470, 20642940]

約数ペア:

[(1, 20642940), (2, 10321470), (3, 6880980), (4, 5160735), (5, 4128588), (6, 3440490), (9, 2293660), (10, 2064294), (12, 1720245), (15, 1376196), (18, 1146830), (20, 1032147), (30, 688098), (36, 573415), (45, 458732), (60, 344049), (73, 282780), (90, 229366), (146, 141390), (180, 114683), (219, 94260), (292, 70695), (365, 56556), (438, 47130), (657, 31420), (730, 28278), (876, 23565), (1095, 18852), (1314, 15710), (1460, 14139), (1571, 13140), (2190, 9426), (2628, 7855), (3142, 6570), (3285, 6284), (4380, 4713)]