21754480

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{419}}^1$

素因数の和:502

約数の個数: 80

約数和(自身を含む): 56246400

約数和(自身を除く): 34491920

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 59, 80, 88, 110, 118, 176, 220, 236, 295, 419, 440, 472, 590, 649, 838, 880, 944, 1180, 1298, 1676, 2095, 2360, 2596, 3245, 3352, 4190, 4609, 4720, 5192, 6490, 6704, 8380, 9218, 10384, 12980, 16760, 18436, 23045, 24721, 25960, 33520, 36872, 46090, 49442, 51920, 73744, 92180, 98884, 123605, 184360, 197768, 247210, 271931, 368720, 395536, 494420, 543862, 988840, 1087724, 1359655, 1977680, 2175448, 2719310, 4350896, 5438620, 10877240, 21754480]

約数ペア:

[(1, 21754480), (2, 10877240), (4, 5438620), (5, 4350896), (8, 2719310), (10, 2175448), (11, 1977680), (16, 1359655), (20, 1087724), (22, 988840), (40, 543862), (44, 494420), (55, 395536), (59, 368720), (80, 271931), (88, 247210), (110, 197768), (118, 184360), (176, 123605), (220, 98884), (236, 92180), (295, 73744), (419, 51920), (440, 49442), (472, 46090), (590, 36872), (649, 33520), (838, 25960), (880, 24721), (944, 23045), (1180, 18436), (1298, 16760), (1676, 12980), (2095, 10384), (2360, 9218), (2596, 8380), (3245, 6704), (3352, 6490), (4190, 5192), (4609, 4720)]