20800845

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1$

素因数の和:123

約数の個数: 72

約数和(自身を含む): 41205528

約数和(自身を除く): 20404683

約数列:

[1, 3, 5, 9, 13, 15, 31, 37, 39, 45, 65, 93, 111, 117, 155, 185, 195, 279, 333, 403, 465, 481, 555, 585, 961, 1147, 1209, 1395, 1443, 1665, 2015, 2405, 2883, 3441, 3627, 4329, 4805, 5735, 6045, 7215, 8649, 10323, 12493, 14415, 14911, 17205, 18135, 21645, 35557, 37479, 43245, 44733, 51615, 62465, 74555, 106671, 112437, 134199, 177785, 187395, 223665, 320013, 462241, 533355, 562185, 670995, 1386723, 1600065, 2311205, 4160169, 6933615, 20800845]

約数ペア:

[(1, 20800845), (3, 6933615), (5, 4160169), (9, 2311205), (13, 1600065), (15, 1386723), (31, 670995), (37, 562185), (39, 533355), (45, 462241), (65, 320013), (93, 223665), (111, 187395), (117, 177785), (155, 134199), (185, 112437), (195, 106671), (279, 74555), (333, 62465), (403, 51615), (465, 44733), (481, 43245), (555, 37479), (585, 35557), (961, 21645), (1147, 18135), (1209, 17205), (1395, 14911), (1443, 14415), (1665, 12493), (2015, 10323), (2405, 8649), (2883, 7215), (3441, 6045), (3627, 5735), (4329, 4805)]