80762500

素因数分解:

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

素因数の和:120

約数の個数: 144

約数和(自身を含む): 220485888

約数和(自身を除く): 139723388

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 71, 91, 100, 125, 130, 140, 142, 175, 182, 250, 260, 284, 325, 350, 355, 364, 455, 497, 500, 625, 650, 700, 710, 875, 910, 923, 994, 1250, 1300, 1420, 1625, 1750, 1775, 1820, 1846, 1988, 2275, 2485, 2500, 3125, 3250, 3500, 3550, 3692, 4375, 4550, 4615, 4970, 6250, 6461, 6500, 7100, 8125, 8750, 8875, 9100, 9230, 9940, 11375, 12425, 12500, 12922, 16250, 17500, 17750, 18460, 21875, 22750, 23075, 24850, 25844, 32305, 32500, 35500, 40625, 43750, 44375, 45500, 46150, 49700, 56875, 62125, 64610, 81250, 87500, 88750, 92300, 113750, 115375, 124250, 129220, 161525, 162500, 177500, 221875, 227500, 230750, 248500, 284375, 310625, 323050, 443750, 461500, 568750, 576875, 621250, 646100, 807625, 887500, 1137500, 1153750, 1242500, 1553125, 1615250, 2307500, 2884375, 3106250, 3230500, 4038125, 5768750, 6212500, 8076250, 11537500, 16152500, 20190625, 40381250, 80762500]

約数ペア:

[(1, 80762500), (2, 40381250), (4, 20190625), (5, 16152500), (7, 11537500), (10, 8076250), (13, 6212500), (14, 5768750), (20, 4038125), (25, 3230500), (26, 3106250), (28, 2884375), (35, 2307500), (50, 1615250), (52, 1553125), (65, 1242500), (70, 1153750), (71, 1137500), (91, 887500), (100, 807625), (125, 646100), (130, 621250), (140, 576875), (142, 568750), (175, 461500), (182, 443750), (250, 323050), (260, 310625), (284, 284375), (325, 248500), (350, 230750), (355, 227500), (364, 221875), (455, 177500), (497, 162500), (500, 161525), (625, 129220), (650, 124250), (700, 115375), (710, 113750), (875, 92300), (910, 88750), (923, 87500), (994, 81250), (1250, 64610), (1300, 62125), (1420, 56875), (1625, 49700), (1750, 46150), (1775, 45500), (1820, 44375), (1846, 43750), (1988, 40625), (2275, 35500), (2485, 32500), (2500, 32305), (3125, 25844), (3250, 24850), (3500, 23075), (3550, 22750), (3692, 21875), (4375, 18460), (4550, 17750), (4615, 17500), (4970, 16250), (6250, 12922), (6461, 12500), (6500, 12425), (7100, 11375), (8125, 9940), (8750, 9230), (8875, 9100)]