20925060

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1$

素因数の和:357

約数の個数: 96

約数和(自身を含む): 63880320

約数和(自身を除く): 42955260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 139, 156, 193, 195, 260, 278, 386, 390, 417, 556, 579, 695, 772, 780, 834, 965, 1158, 1390, 1668, 1807, 1930, 2085, 2316, 2509, 2780, 2895, 3614, 3860, 4170, 5018, 5421, 5790, 7228, 7527, 8340, 9035, 10036, 10842, 11580, 12545, 15054, 18070, 21684, 25090, 26827, 27105, 30108, 36140, 37635, 50180, 53654, 54210, 75270, 80481, 107308, 108420, 134135, 150540, 160962, 268270, 321924, 348751, 402405, 536540, 697502, 804810, 1046253, 1395004, 1609620, 1743755, 2092506, 3487510, 4185012, 5231265, 6975020, 10462530, 20925060]

約数ペア:

[(1, 20925060), (2, 10462530), (3, 6975020), (4, 5231265), (5, 4185012), (6, 3487510), (10, 2092506), (12, 1743755), (13, 1609620), (15, 1395004), (20, 1046253), (26, 804810), (30, 697502), (39, 536540), (52, 402405), (60, 348751), (65, 321924), (78, 268270), (130, 160962), (139, 150540), (156, 134135), (193, 108420), (195, 107308), (260, 80481), (278, 75270), (386, 54210), (390, 53654), (417, 50180), (556, 37635), (579, 36140), (695, 30108), (772, 27105), (780, 26827), (834, 25090), (965, 21684), (1158, 18070), (1390, 15054), (1668, 12545), (1807, 11580), (1930, 10842), (2085, 10036), (2316, 9035), (2509, 8340), (2780, 7527), (2895, 7228), (3614, 5790), (3860, 5421), (4170, 5018)]