20276620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{857}}^1$

素因数の和:899

約数の個数: 72

約数和(自身を含む): 52756704

約数和(自身を除く): 32480084

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 169, 182, 260, 338, 364, 455, 676, 845, 857, 910, 1183, 1690, 1714, 1820, 2366, 3380, 3428, 4285, 4732, 5915, 5999, 8570, 11141, 11830, 11998, 17140, 22282, 23660, 23996, 29995, 44564, 55705, 59990, 77987, 111410, 119980, 144833, 155974, 222820, 289666, 311948, 389935, 579332, 724165, 779870, 1013831, 1448330, 1559740, 2027662, 2896660, 4055324, 5069155, 10138310, 20276620]

約数ペア:

[(1, 20276620), (2, 10138310), (4, 5069155), (5, 4055324), (7, 2896660), (10, 2027662), (13, 1559740), (14, 1448330), (20, 1013831), (26, 779870), (28, 724165), (35, 579332), (52, 389935), (65, 311948), (70, 289666), (91, 222820), (130, 155974), (140, 144833), (169, 119980), (182, 111410), (260, 77987), (338, 59990), (364, 55705), (455, 44564), (676, 29995), (845, 23996), (857, 23660), (910, 22282), (1183, 17140), (1690, 11998), (1714, 11830), (1820, 11141), (2366, 8570), (3380, 5999), (3428, 5915), (4285, 4732)]