20215988212

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{56393}}^1$

素因数の和:56501

約数の個数: 72

約数和(自身を含む): 43202315520

約数和(自身を除く): 22986327308

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 59, 62, 98, 118, 124, 196, 217, 236, 413, 434, 826, 868, 1519, 1652, 1829, 2891, 3038, 3658, 5782, 6076, 7316, 11564, 12803, 25606, 51212, 56393, 89621, 112786, 179242, 225572, 358484, 394751, 789502, 1579004, 1748183, 2763257, 3327187, 3496366, 5526514, 6654374, 6992732, 11053028, 12237281, 13308748, 23290309, 24474562, 46580618, 48949124, 85660967, 93161236, 103142797, 163032163, 171321934, 206285594, 326064326, 342643868, 412571188, 652128652, 721999579, 1443999158, 2887998316, 5053997053, 10107994106, 20215988212]

約数ペア:

[(1, 20215988212), (2, 10107994106), (4, 5053997053), (7, 2887998316), (14, 1443999158), (28, 721999579), (31, 652128652), (49, 412571188), (59, 342643868), (62, 326064326), (98, 206285594), (118, 171321934), (124, 163032163), (196, 103142797), (217, 93161236), (236, 85660967), (413, 48949124), (434, 46580618), (826, 24474562), (868, 23290309), (1519, 13308748), (1652, 12237281), (1829, 11053028), (2891, 6992732), (3038, 6654374), (3658, 5526514), (5782, 3496366), (6076, 3327187), (7316, 2763257), (11564, 1748183), (12803, 1579004), (25606, 789502), (51212, 394751), (56393, 358484), (89621, 225572), (112786, 179242)]