28390845

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{107}}^1$

素因数の和:167

約数の個数: 72

約数和(自身を含む): 56290464

約数和(自身を除く): 27899619

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 107, 133, 147, 245, 285, 321, 361, 399, 535, 665, 735, 749, 931, 1083, 1605, 1805, 1995, 2033, 2247, 2527, 2793, 3745, 4655, 5243, 5415, 6099, 7581, 10165, 11235, 12635, 13965, 14231, 15729, 17689, 26215, 30495, 37905, 38627, 42693, 53067, 71155, 78645, 88445, 99617, 115881, 193135, 213465, 265335, 270389, 298851, 498085, 579405, 811167, 1351945, 1494255, 1892723, 4055835, 5678169, 9463615, 28390845]

約数ペア:

[(1, 28390845), (3, 9463615), (5, 5678169), (7, 4055835), (15, 1892723), (19, 1494255), (21, 1351945), (35, 811167), (49, 579405), (57, 498085), (95, 298851), (105, 270389), (107, 265335), (133, 213465), (147, 193135), (245, 115881), (285, 99617), (321, 88445), (361, 78645), (399, 71155), (535, 53067), (665, 42693), (735, 38627), (749, 37905), (931, 30495), (1083, 26215), (1605, 17689), (1805, 15729), (1995, 14231), (2033, 13965), (2247, 12635), (2527, 11235), (2793, 10165), (3745, 7581), (4655, 6099), (5243, 5415)]