21290568

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{68239}}^1$

素因数の和:68261

約数の個数: 32

約数和(自身を含む): 57321600

約数和(自身を除く): 36031032

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 68239, 136478, 204717, 272956, 409434, 545912, 818868, 887107, 1637736, 1774214, 2661321, 3548428, 5322642, 7096856, 10645284, 21290568]

約数ペア:

[(1, 21290568), (2, 10645284), (3, 7096856), (4, 5322642), (6, 3548428), (8, 2661321), (12, 1774214), (13, 1637736), (24, 887107), (26, 818868), (39, 545912), (52, 409434), (78, 272956), (104, 204717), (156, 136478), (312, 68239)]