21613665

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{877}}^1$

素因数の和:969

約数の個数: 32

約数和(自身を含む): 36412416

約数和(自身を除く): 14798751

約数列:

[1, 3, 5, 15, 31, 53, 93, 155, 159, 265, 465, 795, 877, 1643, 2631, 4385, 4929, 8215, 13155, 24645, 27187, 46481, 81561, 135935, 139443, 232405, 407805, 697215, 1440911, 4322733, 7204555, 21613665]

約数ペア:

[(1, 21613665), (3, 7204555), (5, 4322733), (15, 1440911), (31, 697215), (53, 407805), (93, 232405), (155, 139443), (159, 135935), (265, 81561), (465, 46481), (795, 27187), (877, 24645), (1643, 13155), (2631, 8215), (4385, 4929)]