20531916

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:351

約数の個数: 72

約数和(自身を含む): 54853344

約数和(自身を除く): 34321428

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 69, 92, 137, 138, 181, 207, 274, 276, 362, 411, 414, 543, 548, 724, 822, 828, 1086, 1233, 1629, 1644, 2172, 2466, 3151, 3258, 4163, 4932, 6302, 6516, 8326, 9453, 12489, 12604, 16652, 18906, 24797, 24978, 28359, 37467, 37812, 49594, 49956, 56718, 74391, 74934, 99188, 113436, 148782, 149868, 223173, 297564, 446346, 570331, 892692, 1140662, 1710993, 2281324, 3421986, 5132979, 6843972, 10265958, 20531916]

約数ペア:

[(1, 20531916), (2, 10265958), (3, 6843972), (4, 5132979), (6, 3421986), (9, 2281324), (12, 1710993), (18, 1140662), (23, 892692), (36, 570331), (46, 446346), (69, 297564), (92, 223173), (137, 149868), (138, 148782), (181, 113436), (207, 99188), (274, 74934), (276, 74391), (362, 56718), (411, 49956), (414, 49594), (543, 37812), (548, 37467), (724, 28359), (822, 24978), (828, 24797), (1086, 18906), (1233, 16652), (1629, 12604), (1644, 12489), (2172, 9453), (2466, 8326), (3151, 6516), (3258, 6302), (4163, 4932)]