21082490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{641}}^1$

素因数の和:695

約数の個数: 64

約数和(自身を含む): 46593792

約数和(自身を除く): 25511302

約数列:

[1, 2, 5, 10, 11, 13, 22, 23, 26, 46, 55, 65, 110, 115, 130, 143, 230, 253, 286, 299, 506, 598, 641, 715, 1265, 1282, 1430, 1495, 2530, 2990, 3205, 3289, 6410, 6578, 7051, 8333, 14102, 14743, 16445, 16666, 29486, 32890, 35255, 41665, 70510, 73715, 83330, 91663, 147430, 162173, 183326, 191659, 324346, 383318, 458315, 810865, 916630, 958295, 1621730, 1916590, 2108249, 4216498, 10541245, 21082490]

約数ペア:

[(1, 21082490), (2, 10541245), (5, 4216498), (10, 2108249), (11, 1916590), (13, 1621730), (22, 958295), (23, 916630), (26, 810865), (46, 458315), (55, 383318), (65, 324346), (110, 191659), (115, 183326), (130, 162173), (143, 147430), (230, 91663), (253, 83330), (286, 73715), (299, 70510), (506, 41665), (598, 35255), (641, 32890), (715, 29486), (1265, 16666), (1282, 16445), (1430, 14743), (1495, 14102), (2530, 8333), (2990, 7051), (3205, 6578), (3289, 6410)]