20381712

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{367}}^1$

素因数の和:480

約数の個数: 80

約数和(自身を含む): 57496320

約数和(自身を除く): 37114608

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 89, 104, 156, 178, 208, 267, 312, 356, 367, 534, 624, 712, 734, 1068, 1101, 1157, 1424, 1468, 2136, 2202, 2314, 2936, 3471, 4272, 4404, 4628, 4771, 5872, 6942, 8808, 9256, 9542, 13884, 14313, 17616, 18512, 19084, 27768, 28626, 32663, 38168, 55536, 57252, 65326, 76336, 97989, 114504, 130652, 195978, 229008, 261304, 391956, 424619, 522608, 783912, 849238, 1273857, 1567824, 1698476, 2547714, 3396952, 5095428, 6793904, 10190856, 20381712]

約数ペア:

[(1, 20381712), (2, 10190856), (3, 6793904), (4, 5095428), (6, 3396952), (8, 2547714), (12, 1698476), (13, 1567824), (16, 1273857), (24, 849238), (26, 783912), (39, 522608), (48, 424619), (52, 391956), (78, 261304), (89, 229008), (104, 195978), (156, 130652), (178, 114504), (208, 97989), (267, 76336), (312, 65326), (356, 57252), (367, 55536), (534, 38168), (624, 32663), (712, 28626), (734, 27768), (1068, 19084), (1101, 18512), (1157, 17616), (1424, 14313), (1468, 13884), (2136, 9542), (2202, 9256), (2314, 8808), (2936, 6942), (3471, 5872), (4272, 4771), (4404, 4628)]