21501255

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2039}}^1$

素因数の和:2103

約数の個数: 32

約数和(自身を含む): 37209600

約数和(自身を除く): 15708345

約数列:

[1, 3, 5, 15, 19, 37, 57, 95, 111, 185, 285, 555, 703, 2039, 2109, 3515, 6117, 10195, 10545, 30585, 38741, 75443, 116223, 193705, 226329, 377215, 581115, 1131645, 1433417, 4300251, 7167085, 21501255]

約数ペア:

[(1, 21501255), (3, 7167085), (5, 4300251), (15, 1433417), (19, 1131645), (37, 581115), (57, 377215), (95, 226329), (111, 193705), (185, 116223), (285, 75443), (555, 38741), (703, 30585), (2039, 10545), (2109, 10195), (3515, 6117)]