257690580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{613549}}^1$

素因数の和:613568

約数の個数: 48

約数和(自身を含む): 824611200

約数和(自身を除く): 566920620

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 613549, 1227098, 1840647, 2454196, 3067745, 3681294, 4294843, 6135490, 7362588, 8589686, 9203235, 12270980, 12884529, 17179372, 18406470, 21474215, 25769058, 36812940, 42948430, 51538116, 64422645, 85896860, 128845290, 257690580]

約数ペア:

[(1, 257690580), (2, 128845290), (3, 85896860), (4, 64422645), (5, 51538116), (6, 42948430), (7, 36812940), (10, 25769058), (12, 21474215), (14, 18406470), (15, 17179372), (20, 12884529), (21, 12270980), (28, 9203235), (30, 8589686), (35, 7362588), (42, 6135490), (60, 4294843), (70, 3681294), (84, 3067745), (105, 2454196), (140, 1840647), (210, 1227098), (420, 613549)]