19930105

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:253

約数の個数: 32

約数和(自身を含む): 27165600

約数和(自身を除く): 7235495

約数列:

[1, 5, 13, 29, 65, 97, 109, 145, 377, 485, 545, 1261, 1417, 1885, 2813, 3161, 6305, 7085, 10573, 14065, 15805, 36569, 41093, 52865, 137449, 182845, 205465, 306617, 687245, 1533085, 3986021, 19930105]

約数ペア:

[(1, 19930105), (5, 3986021), (13, 1533085), (29, 687245), (65, 306617), (97, 205465), (109, 182845), (145, 137449), (377, 52865), (485, 41093), (545, 36569), (1261, 15805), (1417, 14065), (1885, 10573), (2813, 7085), (3161, 6305)]