20154825

素因数分解:

$3^4\times 5^2\times {\mathrm{37}}^1\times {\mathrm{269}}^1$

素因数の和:328

約数の個数: 60

約数和(自身を含む): 38485260

約数和(自身を除く): 18330435

約数列:

[1, 3, 5, 9, 15, 25, 27, 37, 45, 75, 81, 111, 135, 185, 225, 269, 333, 405, 555, 675, 807, 925, 999, 1345, 1665, 2025, 2421, 2775, 2997, 4035, 4995, 6725, 7263, 8325, 9953, 12105, 14985, 20175, 21789, 24975, 29859, 36315, 49765, 60525, 74925, 89577, 108945, 149295, 181575, 248825, 268731, 447885, 544725, 746475, 806193, 1343655, 2239425, 4030965, 6718275, 20154825]

約数ペア:

[(1, 20154825), (3, 6718275), (5, 4030965), (9, 2239425), (15, 1343655), (25, 806193), (27, 746475), (37, 544725), (45, 447885), (75, 268731), (81, 248825), (111, 181575), (135, 149295), (185, 108945), (225, 89577), (269, 74925), (333, 60525), (405, 49765), (555, 36315), (675, 29859), (807, 24975), (925, 21789), (999, 20175), (1345, 14985), (1665, 12105), (2025, 9953), (2421, 8325), (2775, 7263), (2997, 6725), (4035, 4995)]