1388897986

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{401}}^1\times {\mathrm{449}}^1$

素因数の和:907

約数の個数: 64

約数和(自身を含む): 2604960000

約数和(自身を除く): 1216062014

約数列:

[1, 2, 7, 14, 19, 29, 38, 58, 133, 203, 266, 401, 406, 449, 551, 802, 898, 1102, 2807, 3143, 3857, 5614, 6286, 7619, 7714, 8531, 11629, 13021, 15238, 17062, 23258, 26042, 53333, 59717, 81403, 91147, 106666, 119434, 162806, 180049, 182294, 220951, 247399, 360098, 441902, 494798, 1260343, 1546657, 1731793, 2520686, 3093314, 3420931, 3463586, 5221421, 6841862, 10442842, 23946517, 36549947, 47893034, 73099894, 99206999, 198413998, 694448993, 1388897986]

約数ペア:

[(1, 1388897986), (2, 694448993), (7, 198413998), (14, 99206999), (19, 73099894), (29, 47893034), (38, 36549947), (58, 23946517), (133, 10442842), (203, 6841862), (266, 5221421), (401, 3463586), (406, 3420931), (449, 3093314), (551, 2520686), (802, 1731793), (898, 1546657), (1102, 1260343), (2807, 494798), (3143, 441902), (3857, 360098), (5614, 247399), (6286, 220951), (7619, 182294), (7714, 180049), (8531, 162806), (11629, 119434), (13021, 106666), (15238, 91147), (17062, 81403), (23258, 59717), (26042, 53333)]