20400012

素因数分解:

$2^2\times 3^4\times {\mathrm{79}}^1\times {\mathrm{797}}^1$

素因数の和:892

約数の個数: 60

約数和(自身を含む): 54072480

約数和(自身を除く): 33672468

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 79, 81, 108, 158, 162, 237, 316, 324, 474, 711, 797, 948, 1422, 1594, 2133, 2391, 2844, 3188, 4266, 4782, 6399, 7173, 8532, 9564, 12798, 14346, 21519, 25596, 28692, 43038, 62963, 64557, 86076, 125926, 129114, 188889, 251852, 258228, 377778, 566667, 755556, 1133334, 1700001, 2266668, 3400002, 5100003, 6800004, 10200006, 20400012]

約数ペア:

[(1, 20400012), (2, 10200006), (3, 6800004), (4, 5100003), (6, 3400002), (9, 2266668), (12, 1700001), (18, 1133334), (27, 755556), (36, 566667), (54, 377778), (79, 258228), (81, 251852), (108, 188889), (158, 129114), (162, 125926), (237, 86076), (316, 64557), (324, 62963), (474, 43038), (711, 28692), (797, 25596), (948, 21519), (1422, 14346), (1594, 12798), (2133, 9564), (2391, 8532), (2844, 7173), (3188, 6399), (4266, 4782)]