20977996

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{4159}}^1$

素因数の和:4273

約数の個数: 24

約数和(自身を含む): 39952640

約数和(自身を除く): 18974644

約数列:

[1, 2, 4, 13, 26, 52, 97, 194, 388, 1261, 2522, 4159, 5044, 8318, 16636, 54067, 108134, 216268, 403423, 806846, 1613692, 5244499, 10488998, 20977996]

約数ペア:

[(1, 20977996), (2, 10488998), (4, 5244499), (13, 1613692), (26, 806846), (52, 403423), (97, 216268), (194, 108134), (388, 54067), (1261, 16636), (2522, 8318), (4159, 5044)]