28931775

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 51187200

約数和(自身を除く): 22255425

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 79, 95, 237, 257, 285, 395, 475, 771, 1185, 1285, 1425, 1501, 1975, 3855, 4503, 4883, 5925, 6425, 7505, 14649, 19275, 20303, 22515, 24415, 37525, 60909, 73245, 101515, 112575, 122075, 304545, 366225, 385757, 507575, 1157271, 1522725, 1928785, 5786355, 9643925, 28931775]

約数ペア:

[(1, 28931775), (3, 9643925), (5, 5786355), (15, 1928785), (19, 1522725), (25, 1157271), (57, 507575), (75, 385757), (79, 366225), (95, 304545), (237, 122075), (257, 112575), (285, 101515), (395, 73245), (475, 60909), (771, 37525), (1185, 24415), (1285, 22515), (1425, 20303), (1501, 19275), (1975, 14649), (3855, 7505), (4503, 6425), (4883, 5925)]