19059920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^3\times {\mathrm{179}}^1$

素因数の和:225

約数の個数: 80

約数和(自身を含む): 49014720

約数和(自身を除く): 29954800

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 179, 220, 242, 358, 440, 484, 605, 716, 880, 895, 968, 1210, 1331, 1432, 1790, 1936, 1969, 2420, 2662, 2864, 3580, 3938, 4840, 5324, 6655, 7160, 7876, 9680, 9845, 10648, 13310, 14320, 15752, 19690, 21296, 21659, 26620, 31504, 39380, 43318, 53240, 78760, 86636, 106480, 108295, 157520, 173272, 216590, 238249, 346544, 433180, 476498, 866360, 952996, 1191245, 1732720, 1905992, 2382490, 3811984, 4764980, 9529960, 19059920]

約数ペア:

[(1, 19059920), (2, 9529960), (4, 4764980), (5, 3811984), (8, 2382490), (10, 1905992), (11, 1732720), (16, 1191245), (20, 952996), (22, 866360), (40, 476498), (44, 433180), (55, 346544), (80, 238249), (88, 216590), (110, 173272), (121, 157520), (176, 108295), (179, 106480), (220, 86636), (242, 78760), (358, 53240), (440, 43318), (484, 39380), (605, 31504), (716, 26620), (880, 21659), (895, 21296), (968, 19690), (1210, 15752), (1331, 14320), (1432, 13310), (1790, 10648), (1936, 9845), (1969, 9680), (2420, 7876), (2662, 7160), (2864, 6655), (3580, 5324), (3938, 4840)]