28191615

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{257}}^1$

素因数の和:439

約数の個数: 32

約数和(自身を含む): 46365696

約数和(自身を除く): 18174081

約数列:

[1, 3, 5, 15, 71, 103, 213, 257, 309, 355, 515, 771, 1065, 1285, 1545, 3855, 7313, 18247, 21939, 26471, 36565, 54741, 79413, 91235, 109695, 132355, 273705, 397065, 1879441, 5638323, 9397205, 28191615]

約数ペア:

[(1, 28191615), (3, 9397205), (5, 5638323), (15, 1879441), (71, 397065), (103, 273705), (213, 132355), (257, 109695), (309, 91235), (355, 79413), (515, 54741), (771, 36565), (1065, 26471), (1285, 21939), (1545, 18247), (3855, 7313)]