1311640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{271}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 3255840

約数和(自身を除く): 1944200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 271, 440, 484, 542, 605, 968, 1084, 1210, 1355, 2168, 2420, 2710, 2981, 4840, 5420, 5962, 10840, 11924, 14905, 23848, 29810, 32791, 59620, 65582, 119240, 131164, 163955, 262328, 327910, 655820, 1311640]

約数ペア:

[(1, 1311640), (2, 655820), (4, 327910), (5, 262328), (8, 163955), (10, 131164), (11, 119240), (20, 65582), (22, 59620), (40, 32791), (44, 29810), (55, 23848), (88, 14905), (110, 11924), (121, 10840), (220, 5962), (242, 5420), (271, 4840), (440, 2981), (484, 2710), (542, 2420), (605, 2168), (968, 1355), (1084, 1210)]