81438400

素因数分解:

$2^6\times 5^2\times {\mathrm{23}}^1\times {\mathrm{2213}}^1$

素因数の和:2258

約数の個数: 84

約数和(自身を含む): 209196432

約数和(自身を除く): 127758032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 32, 40, 46, 50, 64, 80, 92, 100, 115, 160, 184, 200, 230, 320, 368, 400, 460, 575, 736, 800, 920, 1150, 1472, 1600, 1840, 2213, 2300, 3680, 4426, 4600, 7360, 8852, 9200, 11065, 17704, 18400, 22130, 35408, 36800, 44260, 50899, 55325, 70816, 88520, 101798, 110650, 141632, 177040, 203596, 221300, 254495, 354080, 407192, 442600, 508990, 708160, 814384, 885200, 1017980, 1272475, 1628768, 1770400, 2035960, 2544950, 3257536, 3540800, 4071920, 5089900, 8143840, 10179800, 16287680, 20359600, 40719200, 81438400]

約数ペア:

[(1, 81438400), (2, 40719200), (4, 20359600), (5, 16287680), (8, 10179800), (10, 8143840), (16, 5089900), (20, 4071920), (23, 3540800), (25, 3257536), (32, 2544950), (40, 2035960), (46, 1770400), (50, 1628768), (64, 1272475), (80, 1017980), (92, 885200), (100, 814384), (115, 708160), (160, 508990), (184, 442600), (200, 407192), (230, 354080), (320, 254495), (368, 221300), (400, 203596), (460, 177040), (575, 141632), (736, 110650), (800, 101798), (920, 88520), (1150, 70816), (1472, 55325), (1600, 50899), (1840, 44260), (2213, 36800), (2300, 35408), (3680, 22130), (4426, 18400), (4600, 17704), (7360, 11065), (8852, 9200)]