123451640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{1193}}^1$

素因数の和:1416

約数の個数: 64

約数和(自身を含む): 300888000

約数和(自身を除く): 177436360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 199, 260, 398, 520, 796, 995, 1193, 1592, 1990, 2386, 2587, 3980, 4772, 5174, 5965, 7960, 9544, 10348, 11930, 12935, 15509, 20696, 23860, 25870, 31018, 47720, 51740, 62036, 77545, 103480, 124072, 155090, 237407, 310180, 474814, 620360, 949628, 1187035, 1899256, 2374070, 3086291, 4748140, 6172582, 9496280, 12345164, 15431455, 24690328, 30862910, 61725820, 123451640]

約数ペア:

[(1, 123451640), (2, 61725820), (4, 30862910), (5, 24690328), (8, 15431455), (10, 12345164), (13, 9496280), (20, 6172582), (26, 4748140), (40, 3086291), (52, 2374070), (65, 1899256), (104, 1187035), (130, 949628), (199, 620360), (260, 474814), (398, 310180), (520, 237407), (796, 155090), (995, 124072), (1193, 103480), (1592, 77545), (1990, 62036), (2386, 51740), (2587, 47720), (3980, 31018), (4772, 25870), (5174, 23860), (5965, 20696), (7960, 15509), (9544, 12935), (10348, 11930)]