256572015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{811}}^1$

素因数の和:980

約数の個数: 64

約数和(自身を含む): 493903872

約数和(自身を除く): 237331857

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 131, 161, 345, 393, 483, 655, 805, 811, 917, 1965, 2415, 2433, 2751, 3013, 4055, 4585, 5677, 9039, 12165, 13755, 15065, 17031, 18653, 21091, 28385, 45195, 55959, 63273, 85155, 93265, 105455, 106241, 130571, 279795, 316365, 318723, 391713, 531205, 652855, 743687, 1593615, 1958565, 2231061, 2443543, 3718435, 7330629, 11155305, 12217715, 17104801, 36653145, 51314403, 85524005, 256572015]

約数ペア:

[(1, 256572015), (3, 85524005), (5, 51314403), (7, 36653145), (15, 17104801), (21, 12217715), (23, 11155305), (35, 7330629), (69, 3718435), (105, 2443543), (115, 2231061), (131, 1958565), (161, 1593615), (345, 743687), (393, 652855), (483, 531205), (655, 391713), (805, 318723), (811, 316365), (917, 279795), (1965, 130571), (2415, 106241), (2433, 105455), (2751, 93265), (3013, 85155), (4055, 63273), (4585, 55959), (5677, 45195), (9039, 28385), (12165, 21091), (13755, 18653), (15065, 17031)]