20961544

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1951}}^1$

素因数の和:2053

約数の個数: 32

約数和(自身を含む): 42163200

約数和(自身を除く): 21201656

約数列:

[1, 2, 4, 8, 17, 34, 68, 79, 136, 158, 316, 632, 1343, 1951, 2686, 3902, 5372, 7804, 10744, 15608, 33167, 66334, 132668, 154129, 265336, 308258, 616516, 1233032, 2620193, 5240386, 10480772, 20961544]

約数ペア:

[(1, 20961544), (2, 10480772), (4, 5240386), (8, 2620193), (17, 1233032), (34, 616516), (68, 308258), (79, 265336), (136, 154129), (158, 132668), (316, 66334), (632, 33167), (1343, 15608), (1951, 10744), (2686, 7804), (3902, 5372)]