30721125

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:175

約数の個数: 64

約数和(自身を含む): 55710720

約数和(自身を除く): 24989595

約数列:

[1, 3, 5, 15, 17, 25, 51, 61, 75, 79, 85, 125, 183, 237, 255, 305, 375, 395, 425, 915, 1037, 1185, 1275, 1343, 1525, 1975, 2125, 3111, 4029, 4575, 4819, 5185, 5925, 6375, 6715, 7625, 9875, 14457, 15555, 20145, 22875, 24095, 25925, 29625, 33575, 72285, 77775, 81923, 100725, 120475, 129625, 167875, 245769, 361425, 388875, 409615, 503625, 602375, 1228845, 1807125, 2048075, 6144225, 10240375, 30721125]

約数ペア:

[(1, 30721125), (3, 10240375), (5, 6144225), (15, 2048075), (17, 1807125), (25, 1228845), (51, 602375), (61, 503625), (75, 409615), (79, 388875), (85, 361425), (125, 245769), (183, 167875), (237, 129625), (255, 120475), (305, 100725), (375, 81923), (395, 77775), (425, 72285), (915, 33575), (1037, 29625), (1185, 25925), (1275, 24095), (1343, 22875), (1525, 20145), (1975, 15555), (2125, 14457), (3111, 9875), (4029, 7625), (4575, 6715), (4819, 6375), (5185, 5925)]