128968980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{43867}}^1$

素因数の和:43893

約数の個数: 72

約数和(自身を含む): 420079968

約数和(自身を除く): 291110988

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 43867, 87734, 131601, 175468, 219335, 263202, 307069, 438670, 526404, 614138, 658005, 877340, 921207, 1228276, 1316010, 1535345, 1842414, 2149483, 2632020, 3070690, 3684828, 4298966, 4606035, 6141380, 6448449, 8597932, 9212070, 10747415, 12896898, 18424140, 21494830, 25793796, 32242245, 42989660, 64484490, 128968980]

約数ペア:

[(1, 128968980), (2, 64484490), (3, 42989660), (4, 32242245), (5, 25793796), (6, 21494830), (7, 18424140), (10, 12896898), (12, 10747415), (14, 9212070), (15, 8597932), (20, 6448449), (21, 6141380), (28, 4606035), (30, 4298966), (35, 3684828), (42, 3070690), (49, 2632020), (60, 2149483), (70, 1842414), (84, 1535345), (98, 1316010), (105, 1228276), (140, 921207), (147, 877340), (196, 658005), (210, 614138), (245, 526404), (294, 438670), (420, 307069), (490, 263202), (588, 219335), (735, 175468), (980, 131601), (1470, 87734), (2940, 43867)]