20782860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7069}}^1$

素因数の和:7095

約数の個数: 72

約数和(自身を含む): 67702320

約数和(自身を除く): 46919460

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, 7069, 14138, 21207, 28276, 35345, 42414, 49483, 70690, 84828, 98966, 106035, 141380, 148449, 197932, 212070, 247415, 296898, 346381, 424140, 494830, 593796, 692762, 742245, 989660, 1039143, 1385524, 1484490, 1731905, 2078286, 2968980, 3463810, 4156572, 5195715, 6927620, 10391430, 20782860]

約数ペア:

[(1, 20782860), (2, 10391430), (3, 6927620), (4, 5195715), (5, 4156572), (6, 3463810), (7, 2968980), (10, 2078286), (12, 1731905), (14, 1484490), (15, 1385524), (20, 1039143), (21, 989660), (28, 742245), (30, 692762), (35, 593796), (42, 494830), (49, 424140), (60, 346381), (70, 296898), (84, 247415), (98, 212070), (105, 197932), (140, 148449), (147, 141380), (196, 106035), (210, 98966), (245, 84828), (294, 70690), (420, 49483), (490, 42414), (588, 35345), (735, 28276), (980, 21207), (1470, 14138), (2940, 7069)]