20803572

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{151}}^1$

素因数の和:293

約数の個数: 72

約数和(自身を含む): 54774720

約数和(自身を除く): 33971148

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 89, 129, 151, 172, 178, 258, 267, 302, 356, 387, 453, 516, 534, 604, 774, 801, 906, 1068, 1359, 1548, 1602, 1812, 2718, 3204, 3827, 5436, 6493, 7654, 11481, 12986, 13439, 15308, 19479, 22962, 25972, 26878, 34443, 38958, 40317, 45924, 53756, 58437, 68886, 77916, 80634, 116874, 120951, 137772, 161268, 233748, 241902, 483804, 577877, 1155754, 1733631, 2311508, 3467262, 5200893, 6934524, 10401786, 20803572]

約数ペア:

[(1, 20803572), (2, 10401786), (3, 6934524), (4, 5200893), (6, 3467262), (9, 2311508), (12, 1733631), (18, 1155754), (36, 577877), (43, 483804), (86, 241902), (89, 233748), (129, 161268), (151, 137772), (172, 120951), (178, 116874), (258, 80634), (267, 77916), (302, 68886), (356, 58437), (387, 53756), (453, 45924), (516, 40317), (534, 38958), (604, 34443), (774, 26878), (801, 25972), (906, 22962), (1068, 19479), (1359, 15308), (1548, 13439), (1602, 12986), (1812, 11481), (2718, 7654), (3204, 6493), (3827, 5436)]