20987244

素因数分解:

$2^2\times 3^2\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{241}}^1$

素因数の和:351

約数の個数: 72

約数和(自身を含む): 55495440

約数和(自身を除く): 34508196

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 41, 59, 82, 118, 123, 164, 177, 236, 241, 246, 354, 369, 482, 492, 531, 708, 723, 738, 964, 1062, 1446, 1476, 2124, 2169, 2419, 2892, 4338, 4838, 7257, 8676, 9676, 9881, 14219, 14514, 19762, 21771, 28438, 29028, 29643, 39524, 42657, 43542, 56876, 59286, 85314, 87084, 88929, 118572, 127971, 170628, 177858, 255942, 355716, 511884, 582979, 1165958, 1748937, 2331916, 3497874, 5246811, 6995748, 10493622, 20987244]

約数ペア:

[(1, 20987244), (2, 10493622), (3, 6995748), (4, 5246811), (6, 3497874), (9, 2331916), (12, 1748937), (18, 1165958), (36, 582979), (41, 511884), (59, 355716), (82, 255942), (118, 177858), (123, 170628), (164, 127971), (177, 118572), (236, 88929), (241, 87084), (246, 85314), (354, 59286), (369, 56876), (482, 43542), (492, 42657), (531, 39524), (708, 29643), (723, 29028), (738, 28438), (964, 21771), (1062, 19762), (1446, 14514), (1476, 14219), (2124, 9881), (2169, 9676), (2419, 8676), (2892, 7257), (4338, 4838)]