21092720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2179}}^1$

素因数の和:2214

約数の個数: 60

約数和(自身を含む): 53928840

約数和(自身を除く): 32836120

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 2179, 2420, 4358, 4840, 8716, 9680, 10895, 17432, 21790, 23969, 34864, 43580, 47938, 87160, 95876, 119845, 174320, 191752, 239690, 263659, 383504, 479380, 527318, 958760, 1054636, 1318295, 1917520, 2109272, 2636590, 4218544, 5273180, 10546360, 21092720]

約数ペア:

[(1, 21092720), (2, 10546360), (4, 5273180), (5, 4218544), (8, 2636590), (10, 2109272), (11, 1917520), (16, 1318295), (20, 1054636), (22, 958760), (40, 527318), (44, 479380), (55, 383504), (80, 263659), (88, 239690), (110, 191752), (121, 174320), (176, 119845), (220, 95876), (242, 87160), (440, 47938), (484, 43580), (605, 34864), (880, 23969), (968, 21790), (1210, 17432), (1936, 10895), (2179, 9680), (2420, 8716), (4358, 4840)]