278320125

素因数分解:

$3^1\times 5^3\times {\mathrm{23}}^3\times {\mathrm{61}}^1$

素因数の和:148

約数の個数: 64

約数和(自身を含む): 492111360

約数和(自身を除く): 213791235

約数列:

[1, 3, 5, 15, 23, 25, 61, 69, 75, 115, 125, 183, 305, 345, 375, 529, 575, 915, 1403, 1525, 1587, 1725, 2645, 2875, 4209, 4575, 7015, 7625, 7935, 8625, 12167, 13225, 21045, 22875, 32269, 35075, 36501, 39675, 60835, 66125, 96807, 105225, 161345, 175375, 182505, 198375, 304175, 484035, 526125, 742187, 806725, 912525, 1520875, 2226561, 2420175, 3710935, 4033625, 4562625, 11132805, 12100875, 18554675, 55664025, 92773375, 278320125]

約数ペア:

[(1, 278320125), (3, 92773375), (5, 55664025), (15, 18554675), (23, 12100875), (25, 11132805), (61, 4562625), (69, 4033625), (75, 3710935), (115, 2420175), (125, 2226561), (183, 1520875), (305, 912525), (345, 806725), (375, 742187), (529, 526125), (575, 484035), (915, 304175), (1403, 198375), (1525, 182505), (1587, 175375), (1725, 161345), (2645, 105225), (2875, 96807), (4209, 66125), (4575, 60835), (7015, 39675), (7625, 36501), (7935, 35075), (8625, 32269), (12167, 22875), (13225, 21045)]