20643420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2137}}^1$

素因数の和:2179

約数の個数: 96

約数和(自身を含む): 68963328

約数和(自身を除く): 48319908

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 23, 28, 30, 35, 42, 46, 60, 69, 70, 84, 92, 105, 115, 138, 140, 161, 210, 230, 276, 322, 345, 420, 460, 483, 644, 690, 805, 966, 1380, 1610, 1932, 2137, 2415, 3220, 4274, 4830, 6411, 8548, 9660, 10685, 12822, 14959, 21370, 25644, 29918, 32055, 42740, 44877, 49151, 59836, 64110, 74795, 89754, 98302, 128220, 147453, 149590, 179508, 196604, 224385, 245755, 294906, 299180, 344057, 448770, 491510, 589812, 688114, 737265, 897540, 983020, 1032171, 1376228, 1474530, 1720285, 2064342, 2949060, 3440570, 4128684, 5160855, 6881140, 10321710, 20643420]

約数ペア:

[(1, 20643420), (2, 10321710), (3, 6881140), (4, 5160855), (5, 4128684), (6, 3440570), (7, 2949060), (10, 2064342), (12, 1720285), (14, 1474530), (15, 1376228), (20, 1032171), (21, 983020), (23, 897540), (28, 737265), (30, 688114), (35, 589812), (42, 491510), (46, 448770), (60, 344057), (69, 299180), (70, 294906), (84, 245755), (92, 224385), (105, 196604), (115, 179508), (138, 149590), (140, 147453), (161, 128220), (210, 98302), (230, 89754), (276, 74795), (322, 64110), (345, 59836), (420, 49151), (460, 44877), (483, 42740), (644, 32055), (690, 29918), (805, 25644), (966, 21370), (1380, 14959), (1610, 12822), (1932, 10685), (2137, 9660), (2415, 8548), (3220, 6411), (4274, 4830)]