20977456

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{331}}^1$

素因数の和:589

約数の個数: 40

約数和(自身を含む): 43349904

約数和(自身を除く): 22372448

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 233, 272, 331, 466, 662, 932, 1324, 1864, 2648, 3728, 3961, 5296, 5627, 7922, 11254, 15844, 22508, 31688, 45016, 63376, 77123, 90032, 154246, 308492, 616984, 1233968, 1311091, 2622182, 5244364, 10488728, 20977456]

約数ペア:

[(1, 20977456), (2, 10488728), (4, 5244364), (8, 2622182), (16, 1311091), (17, 1233968), (34, 616984), (68, 308492), (136, 154246), (233, 90032), (272, 77123), (331, 63376), (466, 45016), (662, 31688), (932, 22508), (1324, 15844), (1864, 11254), (2648, 7922), (3728, 5627), (3961, 5296)]