19158620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2377}}^1$

素因数の和:2430

約数の個数: 48

約数和(自身を含む): 44744448

約数和(自身を除く): 25585828

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 2377, 4030, 4754, 8060, 9508, 11885, 23770, 30901, 47540, 61802, 73687, 123604, 147374, 154505, 294748, 309010, 368435, 618020, 736870, 957931, 1473740, 1915862, 3831724, 4789655, 9579310, 19158620]

約数ペア:

[(1, 19158620), (2, 9579310), (4, 4789655), (5, 3831724), (10, 1915862), (13, 1473740), (20, 957931), (26, 736870), (31, 618020), (52, 368435), (62, 309010), (65, 294748), (124, 154505), (130, 147374), (155, 123604), (260, 73687), (310, 61802), (403, 47540), (620, 30901), (806, 23770), (1612, 11885), (2015, 9508), (2377, 8060), (4030, 4754)]