25978210

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:231

約数の個数: 48

約数和(自身を含む): 50728680

約数和(自身を除く): 24750470

約数列:

[1, 2, 5, 10, 17, 34, 85, 89, 101, 170, 178, 202, 289, 445, 505, 578, 890, 1010, 1445, 1513, 1717, 2890, 3026, 3434, 7565, 8585, 8989, 15130, 17170, 17978, 25721, 29189, 44945, 51442, 58378, 89890, 128605, 145945, 152813, 257210, 291890, 305626, 764065, 1528130, 2597821, 5195642, 12989105, 25978210]

約数ペア:

[(1, 25978210), (2, 12989105), (5, 5195642), (10, 2597821), (17, 1528130), (34, 764065), (85, 305626), (89, 291890), (101, 257210), (170, 152813), (178, 145945), (202, 128605), (289, 89890), (445, 58378), (505, 51442), (578, 44945), (890, 29189), (1010, 25721), (1445, 17978), (1513, 17170), (1717, 15130), (2890, 8989), (3026, 8585), (3434, 7565)]