20348820

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:156

約数の個数: 144

約数和(自身を含む): 66044160

約数和(自身を除く): 45695340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 53, 54, 60, 79, 81, 90, 106, 108, 135, 158, 159, 162, 180, 212, 237, 243, 265, 270, 316, 318, 324, 395, 405, 474, 477, 486, 530, 540, 636, 711, 790, 795, 810, 948, 954, 972, 1060, 1185, 1215, 1422, 1431, 1580, 1590, 1620, 1908, 2133, 2370, 2385, 2430, 2844, 2862, 3180, 3555, 4187, 4266, 4293, 4740, 4770, 4860, 5724, 6399, 7110, 7155, 8374, 8532, 8586, 9540, 10665, 12561, 12798, 12879, 14220, 14310, 16748, 17172, 19197, 20935, 21330, 21465, 25122, 25596, 25758, 28620, 31995, 37683, 38394, 41870, 42660, 42930, 50244, 51516, 62805, 63990, 64395, 75366, 76788, 83740, 85860, 95985, 113049, 125610, 127980, 128790, 150732, 188415, 191970, 226098, 251220, 257580, 339147, 376830, 383940, 452196, 565245, 678294, 753660, 1017441, 1130490, 1356588, 1695735, 2034882, 2260980, 3391470, 4069764, 5087205, 6782940, 10174410, 20348820]

約数ペア:

[(1, 20348820), (2, 10174410), (3, 6782940), (4, 5087205), (5, 4069764), (6, 3391470), (9, 2260980), (10, 2034882), (12, 1695735), (15, 1356588), (18, 1130490), (20, 1017441), (27, 753660), (30, 678294), (36, 565245), (45, 452196), (53, 383940), (54, 376830), (60, 339147), (79, 257580), (81, 251220), (90, 226098), (106, 191970), (108, 188415), (135, 150732), (158, 128790), (159, 127980), (162, 125610), (180, 113049), (212, 95985), (237, 85860), (243, 83740), (265, 76788), (270, 75366), (316, 64395), (318, 63990), (324, 62805), (395, 51516), (405, 50244), (474, 42930), (477, 42660), (486, 41870), (530, 38394), (540, 37683), (636, 31995), (711, 28620), (790, 25758), (795, 25596), (810, 25122), (948, 21465), (954, 21330), (972, 20935), (1060, 19197), (1185, 17172), (1215, 16748), (1422, 14310), (1431, 14220), (1580, 12879), (1590, 12798), (1620, 12561), (1908, 10665), (2133, 9540), (2370, 8586), (2385, 8532), (2430, 8374), (2844, 7155), (2862, 7110), (3180, 6399), (3555, 5724), (4187, 4860), (4266, 4770), (4293, 4740)]