257966380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{461}}^1\times {\mathrm{571}}^1$

素因数の和:1055

約数の個数: 72

約数和(自身を含む): 632648016

約数和(自身を除く): 374681636

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 461, 490, 571, 922, 980, 1142, 1844, 2284, 2305, 2855, 3227, 3997, 4610, 5710, 6454, 7994, 9220, 11420, 12908, 15988, 16135, 19985, 22589, 27979, 32270, 39970, 45178, 55958, 64540, 79940, 90356, 111916, 112945, 139895, 225890, 263231, 279790, 451780, 526462, 559580, 1052924, 1316155, 1842617, 2632310, 3685234, 5264620, 7370468, 9213085, 12898319, 18426170, 25796638, 36852340, 51593276, 64491595, 128983190, 257966380]

約数ペア:

[(1, 257966380), (2, 128983190), (4, 64491595), (5, 51593276), (7, 36852340), (10, 25796638), (14, 18426170), (20, 12898319), (28, 9213085), (35, 7370468), (49, 5264620), (70, 3685234), (98, 2632310), (140, 1842617), (196, 1316155), (245, 1052924), (461, 559580), (490, 526462), (571, 451780), (922, 279790), (980, 263231), (1142, 225890), (1844, 139895), (2284, 112945), (2305, 111916), (2855, 90356), (3227, 79940), (3997, 64540), (4610, 55958), (5710, 45178), (6454, 39970), (7994, 32270), (9220, 27979), (11420, 22589), (12908, 19985), (15988, 16135)]