20899456

素因数分解:

$2^7\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:297

約数の個数: 64

約数和(自身を含む): 45043200

約数和(自身を除く): 24143744

約数列:

[1, 2, 4, 8, 16, 23, 31, 32, 46, 62, 64, 92, 124, 128, 184, 229, 248, 368, 458, 496, 713, 736, 916, 992, 1426, 1472, 1832, 1984, 2852, 2944, 3664, 3968, 5267, 5704, 7099, 7328, 10534, 11408, 14198, 14656, 21068, 22816, 28396, 29312, 42136, 45632, 56792, 84272, 91264, 113584, 163277, 168544, 227168, 326554, 337088, 454336, 653108, 674176, 908672, 1306216, 2612432, 5224864, 10449728, 20899456]

約数ペア:

[(1, 20899456), (2, 10449728), (4, 5224864), (8, 2612432), (16, 1306216), (23, 908672), (31, 674176), (32, 653108), (46, 454336), (62, 337088), (64, 326554), (92, 227168), (124, 168544), (128, 163277), (184, 113584), (229, 91264), (248, 84272), (368, 56792), (458, 45632), (496, 42136), (713, 29312), (736, 28396), (916, 22816), (992, 21068), (1426, 14656), (1472, 14198), (1832, 11408), (1984, 10534), (2852, 7328), (2944, 7099), (3664, 5704), (3968, 5267)]