28649925

素因数分解:

$3^2\times 5^2\times {\mathrm{223}}^1\times {\mathrm{571}}^1$

素因数の和:810

約数の個数: 36

約数和(自身を含む): 51635584

約数和(自身を除く): 22985659

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 223, 225, 571, 669, 1115, 1713, 2007, 2855, 3345, 5139, 5575, 8565, 10035, 14275, 16725, 25695, 42825, 50175, 127333, 128475, 381999, 636665, 1145997, 1909995, 3183325, 5729985, 9549975, 28649925]

約数ペア:

[(1, 28649925), (3, 9549975), (5, 5729985), (9, 3183325), (15, 1909995), (25, 1145997), (45, 636665), (75, 381999), (223, 128475), (225, 127333), (571, 50175), (669, 42825), (1115, 25695), (1713, 16725), (2007, 14275), (2855, 10035), (3345, 8565), (5139, 5575)]