201991420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{313}}^1\times {\mathrm{787}}^1$

素因数の和:1150

約数の個数: 48

約数和(自身を含む): 436470048

約数和(自身を除く): 234478628

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 313, 410, 626, 787, 820, 1252, 1565, 1574, 3130, 3148, 3935, 6260, 7870, 12833, 15740, 25666, 32267, 51332, 64165, 64534, 128330, 129068, 161335, 246331, 256660, 322670, 492662, 645340, 985324, 1231655, 2463310, 4926620, 10099571, 20199142, 40398284, 50497855, 100995710, 201991420]

約数ペア:

[(1, 201991420), (2, 100995710), (4, 50497855), (5, 40398284), (10, 20199142), (20, 10099571), (41, 4926620), (82, 2463310), (164, 1231655), (205, 985324), (313, 645340), (410, 492662), (626, 322670), (787, 256660), (820, 246331), (1252, 161335), (1565, 129068), (1574, 128330), (3130, 64534), (3148, 64165), (3935, 51332), (6260, 32267), (7870, 25666), (12833, 15740)]