20995464

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2659}}^1$

素因数の和:2722

約数の個数: 64

約数和(自身を含む): 61286400

約数和(自身を除く): 40290936

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 47, 56, 84, 94, 141, 168, 188, 282, 329, 376, 564, 658, 987, 1128, 1316, 1974, 2632, 2659, 3948, 5318, 7896, 7977, 10636, 15954, 18613, 21272, 31908, 37226, 55839, 63816, 74452, 111678, 124973, 148904, 223356, 249946, 374919, 446712, 499892, 749838, 874811, 999784, 1499676, 1749622, 2624433, 2999352, 3499244, 5248866, 6998488, 10497732, 20995464]

約数ペア:

[(1, 20995464), (2, 10497732), (3, 6998488), (4, 5248866), (6, 3499244), (7, 2999352), (8, 2624433), (12, 1749622), (14, 1499676), (21, 999784), (24, 874811), (28, 749838), (42, 499892), (47, 446712), (56, 374919), (84, 249946), (94, 223356), (141, 148904), (168, 124973), (188, 111678), (282, 74452), (329, 63816), (376, 55839), (564, 37226), (658, 31908), (987, 21272), (1128, 18613), (1316, 15954), (1974, 10636), (2632, 7977), (2659, 7896), (3948, 5318)]