20099860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{433}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 46372032

約数和(自身を除く): 26272172

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 211, 220, 422, 433, 844, 866, 1055, 1732, 2110, 2165, 2321, 4220, 4330, 4642, 4763, 8660, 9284, 9526, 11605, 19052, 23210, 23815, 46420, 47630, 91363, 95260, 182726, 365452, 456815, 913630, 1004993, 1827260, 2009986, 4019972, 5024965, 10049930, 20099860]

約数ペア:

[(1, 20099860), (2, 10049930), (4, 5024965), (5, 4019972), (10, 2009986), (11, 1827260), (20, 1004993), (22, 913630), (44, 456815), (55, 365452), (110, 182726), (211, 95260), (220, 91363), (422, 47630), (433, 46420), (844, 23815), (866, 23210), (1055, 19052), (1732, 11605), (2110, 9526), (2165, 9284), (2321, 8660), (4220, 4763), (4330, 4642)]