213298910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{881}}^1$

素因数の和:1001

約数の個数: 64

約数和(自身を含む): 438939648

約数和(自身を除く): 225640738

約数列:

[1, 2, 5, 10, 11, 22, 31, 55, 62, 71, 110, 142, 155, 310, 341, 355, 682, 710, 781, 881, 1562, 1705, 1762, 2201, 3410, 3905, 4402, 4405, 7810, 8810, 9691, 11005, 19382, 22010, 24211, 27311, 48422, 48455, 54622, 62551, 96910, 121055, 125102, 136555, 242110, 273110, 300421, 312755, 600842, 625510, 688061, 1376122, 1502105, 1939081, 3004210, 3440305, 3878162, 6880610, 9695405, 19390810, 21329891, 42659782, 106649455, 213298910]

約数ペア:

[(1, 213298910), (2, 106649455), (5, 42659782), (10, 21329891), (11, 19390810), (22, 9695405), (31, 6880610), (55, 3878162), (62, 3440305), (71, 3004210), (110, 1939081), (142, 1502105), (155, 1376122), (310, 688061), (341, 625510), (355, 600842), (682, 312755), (710, 300421), (781, 273110), (881, 242110), (1562, 136555), (1705, 125102), (1762, 121055), (2201, 96910), (3410, 62551), (3905, 54622), (4402, 48455), (4405, 48422), (7810, 27311), (8810, 24211), (9691, 22010), (11005, 19382)]