18988220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{467}}^1$

素因数の和:602

約数の個数: 48

約数和(自身を含む): 42456960

約数和(自身を除く): 23468740

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 107, 190, 214, 380, 428, 467, 535, 934, 1070, 1868, 2033, 2140, 2335, 4066, 4670, 8132, 8873, 9340, 10165, 17746, 20330, 35492, 40660, 44365, 49969, 88730, 99938, 177460, 199876, 249845, 499690, 949411, 999380, 1898822, 3797644, 4747055, 9494110, 18988220]

約数ペア:

[(1, 18988220), (2, 9494110), (4, 4747055), (5, 3797644), (10, 1898822), (19, 999380), (20, 949411), (38, 499690), (76, 249845), (95, 199876), (107, 177460), (190, 99938), (214, 88730), (380, 49969), (428, 44365), (467, 40660), (535, 35492), (934, 20330), (1070, 17746), (1868, 10165), (2033, 9340), (2140, 8873), (2335, 8132), (4066, 4670)]