64945720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1423}}^1$

素因数の和:1604

約数の個数: 64

約数和(自身を含む): 168145920

約数和(自身を除く): 103200200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 163, 280, 326, 652, 815, 1141, 1304, 1423, 1630, 2282, 2846, 3260, 4564, 5692, 5705, 6520, 7115, 9128, 9961, 11384, 11410, 14230, 19922, 22820, 28460, 39844, 45640, 49805, 56920, 79688, 99610, 199220, 231949, 398440, 463898, 927796, 1159745, 1623643, 1855592, 2319490, 3247286, 4638980, 6494572, 8118215, 9277960, 12989144, 16236430, 32472860, 64945720]

約数ペア:

[(1, 64945720), (2, 32472860), (4, 16236430), (5, 12989144), (7, 9277960), (8, 8118215), (10, 6494572), (14, 4638980), (20, 3247286), (28, 2319490), (35, 1855592), (40, 1623643), (56, 1159745), (70, 927796), (140, 463898), (163, 398440), (280, 231949), (326, 199220), (652, 99610), (815, 79688), (1141, 56920), (1304, 49805), (1423, 45640), (1630, 39844), (2282, 28460), (2846, 22820), (3260, 19922), (4564, 14230), (5692, 11410), (5705, 11384), (6520, 9961), (7115, 9128)]