21472620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27529}}^1$

素因数の和:27554

約数の個数: 48

約数和(自身を含む): 64750560

約数和(自身を除く): 43277940

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, 27529, 55058, 82587, 110116, 137645, 165174, 275290, 330348, 357877, 412935, 550580, 715754, 825870, 1073631, 1431508, 1651740, 1789385, 2147262, 3578770, 4294524, 5368155, 7157540, 10736310, 21472620]

約数ペア:

[(1, 21472620), (2, 10736310), (3, 7157540), (4, 5368155), (5, 4294524), (6, 3578770), (10, 2147262), (12, 1789385), (13, 1651740), (15, 1431508), (20, 1073631), (26, 825870), (30, 715754), (39, 550580), (52, 412935), (60, 357877), (65, 330348), (78, 275290), (130, 165174), (156, 137645), (195, 110116), (260, 82587), (390, 55058), (780, 27529)]