20587125

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:175

約数の個数: 64

約数和(自身を含む): 38158848

約数和(自身を除く): 17571723

約数列:

[1, 3, 5, 13, 15, 25, 39, 41, 65, 75, 103, 123, 125, 195, 205, 309, 325, 375, 515, 533, 615, 975, 1025, 1339, 1545, 1599, 1625, 2575, 2665, 3075, 4017, 4223, 4875, 5125, 6695, 7725, 7995, 12669, 12875, 13325, 15375, 20085, 21115, 33475, 38625, 39975, 54899, 63345, 66625, 100425, 105575, 164697, 167375, 199875, 274495, 316725, 502125, 527875, 823485, 1372475, 1583625, 4117425, 6862375, 20587125]

約数ペア:

[(1, 20587125), (3, 6862375), (5, 4117425), (13, 1583625), (15, 1372475), (25, 823485), (39, 527875), (41, 502125), (65, 316725), (75, 274495), (103, 199875), (123, 167375), (125, 164697), (195, 105575), (205, 100425), (309, 66625), (325, 63345), (375, 54899), (515, 39975), (533, 38625), (615, 33475), (975, 21115), (1025, 20085), (1339, 15375), (1545, 13325), (1599, 12875), (1625, 12669), (2575, 7995), (2665, 7725), (3075, 6695), (4017, 5125), (4223, 4875)]