19217740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{491}}^1$

素因数の和:622

約数の個数: 48

約数和(自身を含む): 42981120

約数和(自身を除く): 23763380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 103, 190, 206, 380, 412, 491, 515, 982, 1030, 1957, 1964, 2060, 2455, 3914, 4910, 7828, 9329, 9785, 9820, 18658, 19570, 37316, 39140, 46645, 50573, 93290, 101146, 186580, 202292, 252865, 505730, 960887, 1011460, 1921774, 3843548, 4804435, 9608870, 19217740]

約数ペア:

[(1, 19217740), (2, 9608870), (4, 4804435), (5, 3843548), (10, 1921774), (19, 1011460), (20, 960887), (38, 505730), (76, 252865), (95, 202292), (103, 186580), (190, 101146), (206, 93290), (380, 50573), (412, 46645), (491, 39140), (515, 37316), (982, 19570), (1030, 18658), (1957, 9820), (1964, 9785), (2060, 9329), (2455, 7828), (3914, 4910)]