20400172

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{461}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 41291712

約数和(自身を除く): 20891540

約数列:

[1, 2, 4, 13, 23, 26, 37, 46, 52, 74, 92, 148, 299, 461, 481, 598, 851, 922, 962, 1196, 1702, 1844, 1924, 3404, 5993, 10603, 11063, 11986, 17057, 21206, 22126, 23972, 34114, 42412, 44252, 68228, 137839, 221741, 275678, 392311, 443482, 551356, 784622, 886964, 1569244, 5100043, 10200086, 20400172]

約数ペア:

[(1, 20400172), (2, 10200086), (4, 5100043), (13, 1569244), (23, 886964), (26, 784622), (37, 551356), (46, 443482), (52, 392311), (74, 275678), (92, 221741), (148, 137839), (299, 68228), (461, 44252), (481, 42412), (598, 34114), (851, 23972), (922, 22126), (962, 21206), (1196, 17057), (1702, 11986), (1844, 11063), (1924, 10603), (3404, 5993)]