20876520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{857}}^1$

素因数の和:907

約数の個数: 128

約数和(自身を含む): 74131200

約数和(自身を除く): 53254680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 29, 30, 35, 40, 42, 56, 58, 60, 70, 84, 87, 105, 116, 120, 140, 145, 168, 174, 203, 210, 232, 280, 290, 348, 406, 420, 435, 580, 609, 696, 812, 840, 857, 870, 1015, 1160, 1218, 1624, 1714, 1740, 2030, 2436, 2571, 3045, 3428, 3480, 4060, 4285, 4872, 5142, 5999, 6090, 6856, 8120, 8570, 10284, 11998, 12180, 12855, 17140, 17997, 20568, 23996, 24360, 24853, 25710, 29995, 34280, 35994, 47992, 49706, 51420, 59990, 71988, 74559, 89985, 99412, 102840, 119980, 124265, 143976, 149118, 173971, 179970, 198824, 239960, 248530, 298236, 347942, 359940, 372795, 497060, 521913, 596472, 695884, 719880, 745590, 869855, 994120, 1043826, 1391768, 1491180, 1739710, 2087652, 2609565, 2982360, 3479420, 4175304, 5219130, 6958840, 10438260, 20876520]

約数ペア:

[(1, 20876520), (2, 10438260), (3, 6958840), (4, 5219130), (5, 4175304), (6, 3479420), (7, 2982360), (8, 2609565), (10, 2087652), (12, 1739710), (14, 1491180), (15, 1391768), (20, 1043826), (21, 994120), (24, 869855), (28, 745590), (29, 719880), (30, 695884), (35, 596472), (40, 521913), (42, 497060), (56, 372795), (58, 359940), (60, 347942), (70, 298236), (84, 248530), (87, 239960), (105, 198824), (116, 179970), (120, 173971), (140, 149118), (145, 143976), (168, 124265), (174, 119980), (203, 102840), (210, 99412), (232, 89985), (280, 74559), (290, 71988), (348, 59990), (406, 51420), (420, 49706), (435, 47992), (580, 35994), (609, 34280), (696, 29995), (812, 25710), (840, 24853), (857, 24360), (870, 23996), (1015, 20568), (1160, 17997), (1218, 17140), (1624, 12855), (1714, 12180), (1740, 11998), (2030, 10284), (2436, 8570), (2571, 8120), (3045, 6856), (3428, 6090), (3480, 5999), (4060, 5142), (4285, 4872)]