20402964

素因数分解:

$2^2\times 3^2\times {\mathrm{439}}^1\times {\mathrm{1291}}^1$

素因数の和:1740

約数の個数: 36

約数和(自身を含む): 51731680

約数和(自身を除く): 31328716

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 439, 878, 1291, 1317, 1756, 2582, 2634, 3873, 3951, 5164, 5268, 7746, 7902, 11619, 15492, 15804, 23238, 46476, 566749, 1133498, 1700247, 2266996, 3400494, 5100741, 6800988, 10201482, 20402964]

約数ペア:

[(1, 20402964), (2, 10201482), (3, 6800988), (4, 5100741), (6, 3400494), (9, 2266996), (12, 1700247), (18, 1133498), (36, 566749), (439, 46476), (878, 23238), (1291, 15804), (1317, 15492), (1756, 11619), (2582, 7902), (2634, 7746), (3873, 5268), (3951, 5164)]