20658540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{487}}^1$

素因数の和:607

約数の個数: 96

約数和(自身を含む): 66898944

約数和(自身を除く): 46240404

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 101, 105, 140, 202, 210, 303, 404, 420, 487, 505, 606, 707, 974, 1010, 1212, 1414, 1461, 1515, 1948, 2020, 2121, 2435, 2828, 2922, 3030, 3409, 3535, 4242, 4870, 5844, 6060, 6818, 7070, 7305, 8484, 9740, 10227, 10605, 13636, 14140, 14610, 17045, 20454, 21210, 29220, 34090, 40908, 42420, 49187, 51135, 68180, 98374, 102270, 147561, 196748, 204540, 245935, 295122, 344309, 491870, 590244, 688618, 737805, 983740, 1032927, 1377236, 1475610, 1721545, 2065854, 2951220, 3443090, 4131708, 5164635, 6886180, 10329270, 20658540]

約数ペア:

[(1, 20658540), (2, 10329270), (3, 6886180), (4, 5164635), (5, 4131708), (6, 3443090), (7, 2951220), (10, 2065854), (12, 1721545), (14, 1475610), (15, 1377236), (20, 1032927), (21, 983740), (28, 737805), (30, 688618), (35, 590244), (42, 491870), (60, 344309), (70, 295122), (84, 245935), (101, 204540), (105, 196748), (140, 147561), (202, 102270), (210, 98374), (303, 68180), (404, 51135), (420, 49187), (487, 42420), (505, 40908), (606, 34090), (707, 29220), (974, 21210), (1010, 20454), (1212, 17045), (1414, 14610), (1461, 14140), (1515, 13636), (1948, 10605), (2020, 10227), (2121, 9740), (2435, 8484), (2828, 7305), (2922, 7070), (3030, 6818), (3409, 6060), (3535, 5844), (4242, 4870)]