257855728

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{72923}}^1$

素因数の和:72961

約数の個数: 40

約数和(自身を含む): 569682288

約数和(自身を除く): 311826560

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 208, 221, 272, 442, 884, 1768, 3536, 72923, 145846, 291692, 583384, 947999, 1166768, 1239691, 1895998, 2479382, 3791996, 4958764, 7583992, 9917528, 15167984, 16115983, 19835056, 32231966, 64463932, 128927864, 257855728]

約数ペア:

[(1, 257855728), (2, 128927864), (4, 64463932), (8, 32231966), (13, 19835056), (16, 16115983), (17, 15167984), (26, 9917528), (34, 7583992), (52, 4958764), (68, 3791996), (104, 2479382), (136, 1895998), (208, 1239691), (221, 1166768), (272, 947999), (442, 583384), (884, 291692), (1768, 145846), (3536, 72923)]