208656840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{248401}}^1$

素因数の和:248422

約数の個数: 64

約数和(自身を含む): 715397760

約数和(自身を除く): 506740920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 248401, 496802, 745203, 993604, 1242005, 1490406, 1738807, 1987208, 2484010, 2980812, 3477614, 3726015, 4968020, 5216421, 5961624, 6955228, 7452030, 8694035, 9936040, 10432842, 13910456, 14904060, 17388070, 20865684, 26082105, 29808120, 34776140, 41731368, 52164210, 69552280, 104328420, 208656840]

約数ペア:

[(1, 208656840), (2, 104328420), (3, 69552280), (4, 52164210), (5, 41731368), (6, 34776140), (7, 29808120), (8, 26082105), (10, 20865684), (12, 17388070), (14, 14904060), (15, 13910456), (20, 10432842), (21, 9936040), (24, 8694035), (28, 7452030), (30, 6955228), (35, 5961624), (40, 5216421), (42, 4968020), (56, 3726015), (60, 3477614), (70, 2980812), (84, 2484010), (105, 1987208), (120, 1738807), (140, 1490406), (168, 1242005), (210, 993604), (280, 745203), (420, 496802), (840, 248401)]