28180125

素因数分解:

$3^2\times 5^3\times {\mathrm{37}}^1\times {\mathrm{677}}^1$

素因数の和:735

約数の個数: 48

約数和(自身を含む): 52249392

約数和(自身を除く): 24069267

約数列:

[1, 3, 5, 9, 15, 25, 37, 45, 75, 111, 125, 185, 225, 333, 375, 555, 677, 925, 1125, 1665, 2031, 2775, 3385, 4625, 6093, 8325, 10155, 13875, 16925, 25049, 30465, 41625, 50775, 75147, 84625, 125245, 152325, 225441, 253875, 375735, 626225, 761625, 1127205, 1878675, 3131125, 5636025, 9393375, 28180125]

約数ペア:

[(1, 28180125), (3, 9393375), (5, 5636025), (9, 3131125), (15, 1878675), (25, 1127205), (37, 761625), (45, 626225), (75, 375735), (111, 253875), (125, 225441), (185, 152325), (225, 125245), (333, 84625), (375, 75147), (555, 50775), (677, 41625), (925, 30465), (1125, 25049), (1665, 16925), (2031, 13875), (2775, 10155), (3385, 8325), (4625, 6093)]