13129840

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{4003}}^1$

素因数の和:4057

約数の個数: 40

約数和(自身を含む): 31279248

約数和(自身を除く): 18149408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 4003, 8006, 16012, 20015, 32024, 40030, 64048, 80060, 160120, 164123, 320240, 328246, 656492, 820615, 1312984, 1641230, 2625968, 3282460, 6564920, 13129840]

約数ペア:

[(1, 13129840), (2, 6564920), (4, 3282460), (5, 2625968), (8, 1641230), (10, 1312984), (16, 820615), (20, 656492), (40, 328246), (41, 320240), (80, 164123), (82, 160120), (164, 80060), (205, 64048), (328, 40030), (410, 32024), (656, 20015), (820, 16012), (1640, 8006), (3280, 4003)]