28851875

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:153

約数の個数: 40

約数和(自身を含む): 40149648

約数和(自身を除く): 11297773

約数列:

[1, 5, 13, 25, 53, 65, 67, 125, 265, 325, 335, 625, 689, 871, 1325, 1625, 1675, 3445, 3551, 4355, 6625, 8125, 8375, 17225, 17755, 21775, 33125, 41875, 46163, 86125, 88775, 108875, 230815, 430625, 443875, 544375, 1154075, 2219375, 5770375, 28851875]

約数ペア:

[(1, 28851875), (5, 5770375), (13, 2219375), (25, 1154075), (53, 544375), (65, 443875), (67, 430625), (125, 230815), (265, 108875), (325, 88775), (335, 86125), (625, 46163), (689, 41875), (871, 33125), (1325, 21775), (1625, 17755), (1675, 17225), (3445, 8375), (3551, 8125), (4355, 6625)]