20984460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2939}}^1$

素因数の和:2975

約数の個数: 96

約数和(自身を含む): 71124480

約数和(自身を除く): 50140020

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 51, 60, 68, 70, 84, 85, 102, 105, 119, 140, 170, 204, 210, 238, 255, 340, 357, 420, 476, 510, 595, 714, 1020, 1190, 1428, 1785, 2380, 2939, 3570, 5878, 7140, 8817, 11756, 14695, 17634, 20573, 29390, 35268, 41146, 44085, 49963, 58780, 61719, 82292, 88170, 99926, 102865, 123438, 149889, 176340, 199852, 205730, 246876, 249815, 299778, 308595, 349741, 411460, 499630, 599556, 617190, 699482, 749445, 999260, 1049223, 1234380, 1398964, 1498890, 1748705, 2098446, 2997780, 3497410, 4196892, 5246115, 6994820, 10492230, 20984460]

約数ペア:

[(1, 20984460), (2, 10492230), (3, 6994820), (4, 5246115), (5, 4196892), (6, 3497410), (7, 2997780), (10, 2098446), (12, 1748705), (14, 1498890), (15, 1398964), (17, 1234380), (20, 1049223), (21, 999260), (28, 749445), (30, 699482), (34, 617190), (35, 599556), (42, 499630), (51, 411460), (60, 349741), (68, 308595), (70, 299778), (84, 249815), (85, 246876), (102, 205730), (105, 199852), (119, 176340), (140, 149889), (170, 123438), (204, 102865), (210, 99926), (238, 88170), (255, 82292), (340, 61719), (357, 58780), (420, 49963), (476, 44085), (510, 41146), (595, 35268), (714, 29390), (1020, 20573), (1190, 17634), (1428, 14695), (1785, 11756), (2380, 8817), (2939, 7140), (3570, 5878)]