1321457720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1489}}^1\times {\mathrm{2017}}^1$

素因数の和:3528

約数の個数: 64

約数和(自身を含む): 3247365600

約数和(自身を除く): 1925907880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 1489, 2017, 2978, 4034, 5956, 7445, 8068, 10085, 11912, 14890, 16136, 16379, 20170, 22187, 29780, 32758, 40340, 44374, 59560, 65516, 80680, 81895, 88748, 110935, 131032, 163790, 177496, 221870, 327580, 443740, 655160, 887480, 3003313, 6006626, 12013252, 15016565, 24026504, 30033130, 33036443, 60066260, 66072886, 120132520, 132145772, 165182215, 264291544, 330364430, 660728860, 1321457720]

約数ペア:

[(1, 1321457720), (2, 660728860), (4, 330364430), (5, 264291544), (8, 165182215), (10, 132145772), (11, 120132520), (20, 66072886), (22, 60066260), (40, 33036443), (44, 30033130), (55, 24026504), (88, 15016565), (110, 12013252), (220, 6006626), (440, 3003313), (1489, 887480), (2017, 655160), (2978, 443740), (4034, 327580), (5956, 221870), (7445, 177496), (8068, 163790), (10085, 131032), (11912, 110935), (14890, 88748), (16136, 81895), (16379, 80680), (20170, 65516), (22187, 59560), (29780, 44374), (32758, 40340)]