20474740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7159}}^1$

素因数の和:7192

約数の個数: 48

約数和(自身を含む): 50520960

約数和(自身を除く): 30046220

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7159, 14318, 28636, 35795, 71590, 78749, 93067, 143180, 157498, 186134, 314996, 372268, 393745, 465335, 787490, 930670, 1023737, 1574980, 1861340, 2047474, 4094948, 5118685, 10237370, 20474740]

約数ペア:

[(1, 20474740), (2, 10237370), (4, 5118685), (5, 4094948), (10, 2047474), (11, 1861340), (13, 1574980), (20, 1023737), (22, 930670), (26, 787490), (44, 465335), (52, 393745), (55, 372268), (65, 314996), (110, 186134), (130, 157498), (143, 143180), (220, 93067), (260, 78749), (286, 71590), (572, 35795), (715, 28636), (1430, 14318), (2860, 7159)]