20915910

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{757}}^1$

素因数の和:1077

約数の個数: 48

約数和(自身を含む): 54630576

約数和(自身を除く): 33714666

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 307, 614, 757, 921, 1514, 1535, 1842, 2271, 2763, 3070, 3785, 4542, 4605, 5526, 6813, 7570, 9210, 11355, 13626, 13815, 22710, 27630, 34065, 68130, 232399, 464798, 697197, 1161995, 1394394, 2091591, 2323990, 3485985, 4183182, 6971970, 10457955, 20915910]

約数ペア:

[(1, 20915910), (2, 10457955), (3, 6971970), (5, 4183182), (6, 3485985), (9, 2323990), (10, 2091591), (15, 1394394), (18, 1161995), (30, 697197), (45, 464798), (90, 232399), (307, 68130), (614, 34065), (757, 27630), (921, 22710), (1514, 13815), (1535, 13626), (1842, 11355), (2271, 9210), (2763, 7570), (3070, 6813), (3785, 5526), (4542, 4605)]