28860040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{613}}^1$

素因数の和:742

約数の個数: 64

約数和(自身を含む): 71616960

約数和(自身を除く): 42756920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 107, 110, 214, 220, 428, 440, 535, 613, 856, 1070, 1177, 1226, 2140, 2354, 2452, 3065, 4280, 4708, 4904, 5885, 6130, 6743, 9416, 11770, 12260, 13486, 23540, 24520, 26972, 33715, 47080, 53944, 65591, 67430, 131182, 134860, 262364, 269720, 327955, 524728, 655910, 721501, 1311820, 1443002, 2623640, 2886004, 3607505, 5772008, 7215010, 14430020, 28860040]

約数ペア:

[(1, 28860040), (2, 14430020), (4, 7215010), (5, 5772008), (8, 3607505), (10, 2886004), (11, 2623640), (20, 1443002), (22, 1311820), (40, 721501), (44, 655910), (55, 524728), (88, 327955), (107, 269720), (110, 262364), (214, 134860), (220, 131182), (428, 67430), (440, 65591), (535, 53944), (613, 47080), (856, 33715), (1070, 26972), (1177, 24520), (1226, 23540), (2140, 13486), (2354, 12260), (2452, 11770), (3065, 9416), (4280, 6743), (4708, 6130), (4904, 5885)]