18828375

素因数分解:

$3^1\times 5^3\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:137

約数の個数: 64

約数和(自身を含む): 34145280

約数和(自身を除く): 15316905

約数列:

[1, 3, 5, 15, 23, 25, 37, 59, 69, 75, 111, 115, 125, 177, 185, 295, 345, 375, 555, 575, 851, 885, 925, 1357, 1475, 1725, 2183, 2553, 2775, 2875, 4071, 4255, 4425, 4625, 6549, 6785, 7375, 8625, 10915, 12765, 13875, 20355, 21275, 22125, 32745, 33925, 50209, 54575, 63825, 101775, 106375, 150627, 163725, 169625, 251045, 272875, 319125, 508875, 753135, 818625, 1255225, 3765675, 6276125, 18828375]

約数ペア:

[(1, 18828375), (3, 6276125), (5, 3765675), (15, 1255225), (23, 818625), (25, 753135), (37, 508875), (59, 319125), (69, 272875), (75, 251045), (111, 169625), (115, 163725), (125, 150627), (177, 106375), (185, 101775), (295, 63825), (345, 54575), (375, 50209), (555, 33925), (575, 32745), (851, 22125), (885, 21275), (925, 20355), (1357, 13875), (1475, 12765), (1725, 10915), (2183, 8625), (2553, 7375), (2775, 6785), (2875, 6549), (4071, 4625), (4255, 4425)]