28861980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{9817}}^1$

素因数の和:9843

約数の個数: 72

約数和(自身を含む): 94017168

約数和(自身を除く): 65155188

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, 9817, 19634, 29451, 39268, 49085, 58902, 68719, 98170, 117804, 137438, 147255, 196340, 206157, 274876, 294510, 343595, 412314, 481033, 589020, 687190, 824628, 962066, 1030785, 1374380, 1443099, 1924132, 2061570, 2405165, 2886198, 4123140, 4810330, 5772396, 7215495, 9620660, 14430990, 28861980]

約数ペア:

[(1, 28861980), (2, 14430990), (3, 9620660), (4, 7215495), (5, 5772396), (6, 4810330), (7, 4123140), (10, 2886198), (12, 2405165), (14, 2061570), (15, 1924132), (20, 1443099), (21, 1374380), (28, 1030785), (30, 962066), (35, 824628), (42, 687190), (49, 589020), (60, 481033), (70, 412314), (84, 343595), (98, 294510), (105, 274876), (140, 206157), (147, 196340), (196, 147255), (210, 137438), (245, 117804), (294, 98170), (420, 68719), (490, 58902), (588, 49085), (735, 39268), (980, 29451), (1470, 19634), (2940, 9817)]