28485660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{9689}}^1$

素因数の和:9715

約数の個数: 72

約数和(自身を含む): 92791440

約数和(自身を除く): 64305780

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 9689, 19378, 29067, 38756, 48445, 58134, 67823, 96890, 116268, 135646, 145335, 193780, 203469, 271292, 290670, 339115, 406938, 474761, 581340, 678230, 813876, 949522, 1017345, 1356460, 1424283, 1899044, 2034690, 2373805, 2848566, 4069380, 4747610, 5697132, 7121415, 9495220, 14242830, 28485660]

約数ペア:

[(1, 28485660), (2, 14242830), (3, 9495220), (4, 7121415), (5, 5697132), (6, 4747610), (7, 4069380), (10, 2848566), (12, 2373805), (14, 2034690), (15, 1899044), (20, 1424283), (21, 1356460), (28, 1017345), (30, 949522), (35, 813876), (42, 678230), (49, 581340), (60, 474761), (70, 406938), (84, 339115), (98, 290670), (105, 271292), (140, 203469), (147, 193780), (196, 145335), (210, 135646), (245, 116268), (294, 96890), (420, 67823), (490, 58134), (588, 48445), (735, 38756), (980, 29067), (1470, 19378), (2940, 9689)]