21690075

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{431}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 39854592

約数和(自身を除く): 18164517

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 61, 75, 165, 183, 275, 305, 431, 671, 825, 915, 1293, 1525, 2013, 2155, 3355, 4575, 4741, 6465, 10065, 10775, 14223, 16775, 23705, 26291, 32325, 50325, 71115, 78873, 118525, 131455, 289201, 355575, 394365, 657275, 867603, 1446005, 1971825, 4338015, 7230025, 21690075]

約数ペア:

[(1, 21690075), (3, 7230025), (5, 4338015), (11, 1971825), (15, 1446005), (25, 867603), (33, 657275), (55, 394365), (61, 355575), (75, 289201), (165, 131455), (183, 118525), (275, 78873), (305, 71115), (431, 50325), (671, 32325), (825, 26291), (915, 23705), (1293, 16775), (1525, 14223), (2013, 10775), (2155, 10065), (3355, 6465), (4575, 4741)]