7721740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1747}}^1$

素因数の和:1786

約数の個数: 48

約数和(自身を含む): 18500832

約数和(自身を除く): 10779092

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 1747, 2210, 3494, 4420, 6988, 8735, 17470, 22711, 29699, 34940, 45422, 59398, 90844, 113555, 118796, 148495, 227110, 296990, 386087, 454220, 593980, 772174, 1544348, 1930435, 3860870, 7721740]

約数ペア:

[(1, 7721740), (2, 3860870), (4, 1930435), (5, 1544348), (10, 772174), (13, 593980), (17, 454220), (20, 386087), (26, 296990), (34, 227110), (52, 148495), (65, 118796), (68, 113555), (85, 90844), (130, 59398), (170, 45422), (221, 34940), (260, 29699), (340, 22711), (442, 17470), (884, 8735), (1105, 6988), (1747, 4420), (2210, 3494)]