21857880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{571}}^1$

素因数の和:625

約数の個数: 128

約数和(自身を含む): 74131200

約数和(自身を除く): 52273320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 29, 30, 33, 40, 44, 55, 58, 60, 66, 87, 88, 110, 116, 120, 132, 145, 165, 174, 220, 232, 264, 290, 319, 330, 348, 435, 440, 571, 580, 638, 660, 696, 870, 957, 1142, 1160, 1276, 1320, 1595, 1713, 1740, 1914, 2284, 2552, 2855, 3190, 3426, 3480, 3828, 4568, 4785, 5710, 6281, 6380, 6852, 7656, 8565, 9570, 11420, 12562, 12760, 13704, 16559, 17130, 18843, 19140, 22840, 25124, 31405, 33118, 34260, 37686, 38280, 49677, 50248, 62810, 66236, 68520, 75372, 82795, 94215, 99354, 125620, 132472, 150744, 165590, 182149, 188430, 198708, 248385, 251240, 331180, 364298, 376860, 397416, 496770, 546447, 662360, 728596, 753720, 910745, 993540, 1092894, 1457192, 1821490, 1987080, 2185788, 2732235, 3642980, 4371576, 5464470, 7285960, 10928940, 21857880]

約数ペア:

[(1, 21857880), (2, 10928940), (3, 7285960), (4, 5464470), (5, 4371576), (6, 3642980), (8, 2732235), (10, 2185788), (11, 1987080), (12, 1821490), (15, 1457192), (20, 1092894), (22, 993540), (24, 910745), (29, 753720), (30, 728596), (33, 662360), (40, 546447), (44, 496770), (55, 397416), (58, 376860), (60, 364298), (66, 331180), (87, 251240), (88, 248385), (110, 198708), (116, 188430), (120, 182149), (132, 165590), (145, 150744), (165, 132472), (174, 125620), (220, 99354), (232, 94215), (264, 82795), (290, 75372), (319, 68520), (330, 66236), (348, 62810), (435, 50248), (440, 49677), (571, 38280), (580, 37686), (638, 34260), (660, 33118), (696, 31405), (870, 25124), (957, 22840), (1142, 19140), (1160, 18843), (1276, 17130), (1320, 16559), (1595, 13704), (1713, 12760), (1740, 12562), (1914, 11420), (2284, 9570), (2552, 8565), (2855, 7656), (3190, 6852), (3426, 6380), (3480, 6281), (3828, 5710), (4568, 4785)]