20558460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26357}}^1$

素因数の和:26382

約数の個数: 48

約数和(自身を含む): 61994016

約数和(自身を除く): 41435556

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26357, 52714, 79071, 105428, 131785, 158142, 263570, 316284, 342641, 395355, 527140, 685282, 790710, 1027923, 1370564, 1581420, 1713205, 2055846, 3426410, 4111692, 5139615, 6852820, 10279230, 20558460]

約数ペア:

[(1, 20558460), (2, 10279230), (3, 6852820), (4, 5139615), (5, 4111692), (6, 3426410), (10, 2055846), (12, 1713205), (13, 1581420), (15, 1370564), (20, 1027923), (26, 790710), (30, 685282), (39, 527140), (52, 395355), (60, 342641), (65, 316284), (78, 263570), (130, 158142), (156, 131785), (195, 105428), (260, 79071), (390, 52714), (780, 26357)]