20257860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{347}}^1$

素因数の和:505

約数の個数: 96

約数和(自身を含む): 65479680

約数和(自身を除く): 45221820

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 139, 140, 210, 278, 347, 417, 420, 556, 694, 695, 834, 973, 1041, 1388, 1390, 1668, 1735, 1946, 2082, 2085, 2429, 2780, 2919, 3470, 3892, 4164, 4170, 4858, 4865, 5205, 5838, 6940, 7287, 8340, 9716, 9730, 10410, 11676, 12145, 14574, 14595, 19460, 20820, 24290, 29148, 29190, 36435, 48233, 48580, 58380, 72870, 96466, 144699, 145740, 192932, 241165, 289398, 337631, 482330, 578796, 675262, 723495, 964660, 1012893, 1350524, 1446990, 1688155, 2025786, 2893980, 3376310, 4051572, 5064465, 6752620, 10128930, 20257860]

約数ペア:

[(1, 20257860), (2, 10128930), (3, 6752620), (4, 5064465), (5, 4051572), (6, 3376310), (7, 2893980), (10, 2025786), (12, 1688155), (14, 1446990), (15, 1350524), (20, 1012893), (21, 964660), (28, 723495), (30, 675262), (35, 578796), (42, 482330), (60, 337631), (70, 289398), (84, 241165), (105, 192932), (139, 145740), (140, 144699), (210, 96466), (278, 72870), (347, 58380), (417, 48580), (420, 48233), (556, 36435), (694, 29190), (695, 29148), (834, 24290), (973, 20820), (1041, 19460), (1388, 14595), (1390, 14574), (1668, 12145), (1735, 11676), (1946, 10410), (2082, 9730), (2085, 9716), (2429, 8340), (2780, 7287), (2919, 6940), (3470, 5838), (3892, 5205), (4164, 4865), (4170, 4858)]