51355720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:215

約数の個数: 96

約数和(自身を含む): 128070720

約数和(自身を除く): 76715000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 71, 104, 107, 130, 142, 169, 214, 260, 284, 338, 355, 428, 520, 535, 568, 676, 710, 845, 856, 923, 1070, 1352, 1391, 1420, 1690, 1846, 2140, 2782, 2840, 3380, 3692, 4280, 4615, 5564, 6760, 6955, 7384, 7597, 9230, 11128, 11999, 13910, 15194, 18083, 18460, 23998, 27820, 30388, 36166, 36920, 37985, 47996, 55640, 59995, 60776, 72332, 75970, 90415, 95992, 98761, 119990, 144664, 151940, 180830, 197522, 239980, 303880, 361660, 395044, 479960, 493805, 723320, 790088, 987610, 1283893, 1975220, 2567786, 3950440, 5135572, 6419465, 10271144, 12838930, 25677860, 51355720]

約数ペア:

[(1, 51355720), (2, 25677860), (4, 12838930), (5, 10271144), (8, 6419465), (10, 5135572), (13, 3950440), (20, 2567786), (26, 1975220), (40, 1283893), (52, 987610), (65, 790088), (71, 723320), (104, 493805), (107, 479960), (130, 395044), (142, 361660), (169, 303880), (214, 239980), (260, 197522), (284, 180830), (338, 151940), (355, 144664), (428, 119990), (520, 98761), (535, 95992), (568, 90415), (676, 75970), (710, 72332), (845, 60776), (856, 59995), (923, 55640), (1070, 47996), (1352, 37985), (1391, 36920), (1420, 36166), (1690, 30388), (1846, 27820), (2140, 23998), (2782, 18460), (2840, 18083), (3380, 15194), (3692, 13910), (4280, 11999), (4615, 11128), (5564, 9230), (6760, 7597), (6955, 7384)]