20785506

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{61}}^2$

素因数の和:160

約数の個数: 72

約数和(自身を含む): 51751440

約数和(自身を除く): 30965934

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 49, 57, 61, 98, 114, 122, 133, 147, 183, 266, 294, 366, 399, 427, 798, 854, 931, 1159, 1281, 1862, 2318, 2562, 2793, 2989, 3477, 3721, 5586, 5978, 6954, 7442, 8113, 8967, 11163, 16226, 17934, 22326, 24339, 26047, 48678, 52094, 56791, 70699, 78141, 113582, 141398, 156282, 170373, 182329, 212097, 340746, 364658, 424194, 494893, 546987, 989786, 1093974, 1484679, 2969358, 3464251, 6928502, 10392753, 20785506]

約数ペア:

[(1, 20785506), (2, 10392753), (3, 6928502), (6, 3464251), (7, 2969358), (14, 1484679), (19, 1093974), (21, 989786), (38, 546987), (42, 494893), (49, 424194), (57, 364658), (61, 340746), (98, 212097), (114, 182329), (122, 170373), (133, 156282), (147, 141398), (183, 113582), (266, 78141), (294, 70699), (366, 56791), (399, 52094), (427, 48678), (798, 26047), (854, 24339), (931, 22326), (1159, 17934), (1281, 16226), (1862, 11163), (2318, 8967), (2562, 8113), (2793, 7442), (2989, 6954), (3477, 5978), (3721, 5586)]