20357148

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{389}}^1$

素因数の和:499

約数の個数: 72

約数和(自身を含む): 56019600

約数和(自身を除く): 35662452

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 89, 98, 147, 178, 196, 267, 294, 356, 389, 534, 588, 623, 778, 1068, 1167, 1246, 1556, 1869, 2334, 2492, 2723, 3738, 4361, 4668, 5446, 7476, 8169, 8722, 10892, 13083, 16338, 17444, 19061, 26166, 32676, 34621, 38122, 52332, 57183, 69242, 76244, 103863, 114366, 138484, 207726, 228732, 242347, 415452, 484694, 727041, 969388, 1454082, 1696429, 2908164, 3392858, 5089287, 6785716, 10178574, 20357148]

約数ペア:

[(1, 20357148), (2, 10178574), (3, 6785716), (4, 5089287), (6, 3392858), (7, 2908164), (12, 1696429), (14, 1454082), (21, 969388), (28, 727041), (42, 484694), (49, 415452), (84, 242347), (89, 228732), (98, 207726), (147, 138484), (178, 114366), (196, 103863), (267, 76244), (294, 69242), (356, 57183), (389, 52332), (534, 38122), (588, 34621), (623, 32676), (778, 26166), (1068, 19061), (1167, 17444), (1246, 16338), (1556, 13083), (1869, 10892), (2334, 8722), (2492, 8169), (2723, 7476), (3738, 5446), (4361, 4668)]