1900474420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{14887}}^1$

素因数の和:15400

約数の個数: 48

約数和(自身を含む): 4307038848

約数和(自身を除く): 2406564428

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 491, 982, 1964, 2455, 4910, 6383, 9820, 12766, 14887, 25532, 29774, 31915, 59548, 63830, 74435, 127660, 148870, 193531, 297740, 387062, 774124, 967655, 1935310, 3870620, 7309517, 14619034, 29238068, 36547585, 73095170, 95023721, 146190340, 190047442, 380094884, 475118605, 950237210, 1900474420]

約数ペア:

[(1, 1900474420), (2, 950237210), (4, 475118605), (5, 380094884), (10, 190047442), (13, 146190340), (20, 95023721), (26, 73095170), (52, 36547585), (65, 29238068), (130, 14619034), (260, 7309517), (491, 3870620), (982, 1935310), (1964, 967655), (2455, 774124), (4910, 387062), (6383, 297740), (9820, 193531), (12766, 148870), (14887, 127660), (25532, 74435), (29774, 63830), (31915, 59548)]