644355

素因数分解:

$3^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:97

約数の個数: 40

約数和(自身を含む): 1213872

約数和(自身を除く): 569517

約数列:

[1, 3, 5, 9, 15, 27, 37, 43, 45, 81, 111, 129, 135, 185, 215, 333, 387, 405, 555, 645, 999, 1161, 1591, 1665, 1935, 2997, 3483, 4773, 4995, 5805, 7955, 14319, 14985, 17415, 23865, 42957, 71595, 128871, 214785, 644355]

約数ペア:

[(1, 644355), (3, 214785), (5, 128871), (9, 71595), (15, 42957), (27, 23865), (37, 17415), (43, 14985), (45, 14319), (81, 7955), (111, 5805), (129, 4995), (135, 4773), (185, 3483), (215, 2997), (333, 1935), (387, 1665), (405, 1591), (555, 1161), (645, 999)]