28003820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 67568256

約数和(自身を除く): 39564436

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 41, 52, 65, 71, 74, 82, 130, 142, 148, 164, 185, 205, 260, 284, 355, 370, 410, 481, 533, 710, 740, 820, 923, 962, 1066, 1420, 1517, 1846, 1924, 2132, 2405, 2627, 2665, 2911, 3034, 3692, 4615, 4810, 5254, 5330, 5822, 6068, 7585, 9230, 9620, 10508, 10660, 11644, 13135, 14555, 15170, 18460, 19721, 26270, 29110, 30340, 34151, 37843, 39442, 52540, 58220, 68302, 75686, 78884, 98605, 107707, 136604, 151372, 170755, 189215, 197210, 215414, 341510, 378430, 394420, 430828, 538535, 683020, 756860, 1077070, 1400191, 2154140, 2800382, 5600764, 7000955, 14001910, 28003820]

約数ペア:

[(1, 28003820), (2, 14001910), (4, 7000955), (5, 5600764), (10, 2800382), (13, 2154140), (20, 1400191), (26, 1077070), (37, 756860), (41, 683020), (52, 538535), (65, 430828), (71, 394420), (74, 378430), (82, 341510), (130, 215414), (142, 197210), (148, 189215), (164, 170755), (185, 151372), (205, 136604), (260, 107707), (284, 98605), (355, 78884), (370, 75686), (410, 68302), (481, 58220), (533, 52540), (710, 39442), (740, 37843), (820, 34151), (923, 30340), (962, 29110), (1066, 26270), (1420, 19721), (1517, 18460), (1846, 15170), (1924, 14555), (2132, 13135), (2405, 11644), (2627, 10660), (2665, 10508), (2911, 9620), (3034, 9230), (3692, 7585), (4615, 6068), (4810, 5822), (5254, 5330)]