29975625

素因数分解:

$3^2\times 5^4\times {\mathrm{73}}^2$

素因数の和:172

約数の個数: 45

約数和(自身を含む): 54856659

約数和(自身を除く): 24881034

約数列:

[1, 3, 5, 9, 15, 25, 45, 73, 75, 125, 219, 225, 365, 375, 625, 657, 1095, 1125, 1825, 1875, 3285, 5329, 5475, 5625, 9125, 15987, 16425, 26645, 27375, 45625, 47961, 79935, 82125, 133225, 136875, 239805, 399675, 410625, 666125, 1199025, 1998375, 3330625, 5995125, 9991875, 29975625]

約数ペア:

[(1, 29975625), (3, 9991875), (5, 5995125), (9, 3330625), (15, 1998375), (25, 1199025), (45, 666125), (73, 410625), (75, 399675), (125, 239805), (219, 136875), (225, 133225), (365, 82125), (375, 79935), (625, 47961), (657, 45625), (1095, 27375), (1125, 26645), (1825, 16425), (1875, 15987), (3285, 9125), (5329, 5625)]