258440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1$

素因数の和:102

約数の個数: 64

約数和(自身を含む): 725760

約数和(自身を除く): 467320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 71, 91, 104, 130, 140, 142, 182, 260, 280, 284, 355, 364, 455, 497, 520, 568, 710, 728, 910, 923, 994, 1420, 1820, 1846, 1988, 2485, 2840, 3640, 3692, 3976, 4615, 4970, 6461, 7384, 9230, 9940, 12922, 18460, 19880, 25844, 32305, 36920, 51688, 64610, 129220, 258440]

約数ペア:

[(1, 258440), (2, 129220), (4, 64610), (5, 51688), (7, 36920), (8, 32305), (10, 25844), (13, 19880), (14, 18460), (20, 12922), (26, 9940), (28, 9230), (35, 7384), (40, 6461), (52, 4970), (56, 4615), (65, 3976), (70, 3692), (71, 3640), (91, 2840), (104, 2485), (130, 1988), (140, 1846), (142, 1820), (182, 1420), (260, 994), (280, 923), (284, 910), (355, 728), (364, 710), (455, 568), (497, 520)]