21937970

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{59}}^1\times {\mathrm{103}}^1$

素因数の和:207

約数の個数: 48

約数和(自身を含む): 42793920

約数和(自身を除く): 20855950

約数列:

[1, 2, 5, 10, 19, 38, 59, 95, 103, 118, 190, 206, 295, 361, 515, 590, 722, 1030, 1121, 1805, 1957, 2242, 3610, 3914, 5605, 6077, 9785, 11210, 12154, 19570, 21299, 30385, 37183, 42598, 60770, 74366, 106495, 115463, 185915, 212990, 230926, 371830, 577315, 1154630, 2193797, 4387594, 10968985, 21937970]

約数ペア:

[(1, 21937970), (2, 10968985), (5, 4387594), (10, 2193797), (19, 1154630), (38, 577315), (59, 371830), (95, 230926), (103, 212990), (118, 185915), (190, 115463), (206, 106495), (295, 74366), (361, 60770), (515, 42598), (590, 37183), (722, 30385), (1030, 21299), (1121, 19570), (1805, 12154), (1957, 11210), (2242, 9785), (3610, 6077), (3914, 5605)]