20506788

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^2\times {\mathrm{113}}^1$

素因数の和:265

約数の個数: 54

約数和(自身を含む): 53042262

約数和(自身を除く): 32535474

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 113, 142, 213, 226, 284, 339, 426, 452, 639, 678, 852, 1017, 1278, 1356, 2034, 2556, 4068, 5041, 8023, 10082, 15123, 16046, 20164, 24069, 30246, 32092, 45369, 48138, 60492, 72207, 90738, 96276, 144414, 181476, 288828, 569633, 1139266, 1708899, 2278532, 3417798, 5126697, 6835596, 10253394, 20506788]

約数ペア:

[(1, 20506788), (2, 10253394), (3, 6835596), (4, 5126697), (6, 3417798), (9, 2278532), (12, 1708899), (18, 1139266), (36, 569633), (71, 288828), (113, 181476), (142, 144414), (213, 96276), (226, 90738), (284, 72207), (339, 60492), (426, 48138), (452, 45369), (639, 32092), (678, 30246), (852, 24069), (1017, 20164), (1278, 16046), (1356, 15123), (2034, 10082), (2556, 8023), (4068, 5041)]