19856360

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{191}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 27421720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 113, 115, 184, 191, 226, 230, 382, 452, 460, 565, 764, 904, 920, 955, 1130, 1528, 1910, 2260, 2599, 3820, 4393, 4520, 5198, 7640, 8786, 10396, 12995, 17572, 20792, 21583, 21965, 25990, 35144, 43166, 43930, 51980, 86332, 87860, 103960, 107915, 172664, 175720, 215830, 431660, 496409, 863320, 992818, 1985636, 2482045, 3971272, 4964090, 9928180, 19856360]

約数ペア:

[(1, 19856360), (2, 9928180), (4, 4964090), (5, 3971272), (8, 2482045), (10, 1985636), (20, 992818), (23, 863320), (40, 496409), (46, 431660), (92, 215830), (113, 175720), (115, 172664), (184, 107915), (191, 103960), (226, 87860), (230, 86332), (382, 51980), (452, 43930), (460, 43166), (565, 35144), (764, 25990), (904, 21965), (920, 21583), (955, 20792), (1130, 17572), (1528, 12995), (1910, 10396), (2260, 8786), (2599, 7640), (3820, 5198), (4393, 4520)]