20850760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{659}}^1$

素因数の和:790

約数の個数: 64

約数和(自身を含む): 54172800

約数和(自身を除く): 33322040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 113, 140, 226, 280, 452, 565, 659, 791, 904, 1130, 1318, 1582, 2260, 2636, 3164, 3295, 3955, 4520, 4613, 5272, 6328, 6590, 7910, 9226, 13180, 15820, 18452, 23065, 26360, 31640, 36904, 46130, 74467, 92260, 148934, 184520, 297868, 372335, 521269, 595736, 744670, 1042538, 1489340, 2085076, 2606345, 2978680, 4170152, 5212690, 10425380, 20850760]

約数ペア:

[(1, 20850760), (2, 10425380), (4, 5212690), (5, 4170152), (7, 2978680), (8, 2606345), (10, 2085076), (14, 1489340), (20, 1042538), (28, 744670), (35, 595736), (40, 521269), (56, 372335), (70, 297868), (113, 184520), (140, 148934), (226, 92260), (280, 74467), (452, 46130), (565, 36904), (659, 31640), (791, 26360), (904, 23065), (1130, 18452), (1318, 15820), (1582, 13180), (2260, 9226), (2636, 7910), (3164, 6590), (3295, 6328), (3955, 5272), (4520, 4613)]