20996664

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{389}}^1$

素因数の和:584

約数の個数: 64

約数和(自身を含む): 57002400

約数和(自身を除く): 36005736

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 173, 312, 346, 389, 519, 692, 778, 1038, 1167, 1384, 1556, 2076, 2249, 2334, 3112, 4152, 4498, 4668, 5057, 6747, 8996, 9336, 10114, 13494, 15171, 17992, 20228, 26988, 30342, 40456, 53976, 60684, 67297, 121368, 134594, 201891, 269188, 403782, 538376, 807564, 874861, 1615128, 1749722, 2624583, 3499444, 5249166, 6998888, 10498332, 20996664]

約数ペア:

[(1, 20996664), (2, 10498332), (3, 6998888), (4, 5249166), (6, 3499444), (8, 2624583), (12, 1749722), (13, 1615128), (24, 874861), (26, 807564), (39, 538376), (52, 403782), (78, 269188), (104, 201891), (156, 134594), (173, 121368), (312, 67297), (346, 60684), (389, 53976), (519, 40456), (692, 30342), (778, 26988), (1038, 20228), (1167, 17992), (1384, 15171), (1556, 13494), (2076, 10114), (2249, 9336), (2334, 8996), (3112, 6747), (4152, 5057), (4498, 4668)]