20898090

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2609}}^1$

素因数の和:2711

約数の個数: 48

約数和(自身を含む): 54966600

約数和(自身を除く): 34068510

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 89, 90, 178, 267, 445, 534, 801, 890, 1335, 1602, 2609, 2670, 4005, 5218, 7827, 8010, 13045, 15654, 23481, 26090, 39135, 46962, 78270, 117405, 232201, 234810, 464402, 696603, 1161005, 1393206, 2089809, 2322010, 3483015, 4179618, 6966030, 10449045, 20898090]

約数ペア:

[(1, 20898090), (2, 10449045), (3, 6966030), (5, 4179618), (6, 3483015), (9, 2322010), (10, 2089809), (15, 1393206), (18, 1161005), (30, 696603), (45, 464402), (89, 234810), (90, 232201), (178, 117405), (267, 78270), (445, 46962), (534, 39135), (801, 26090), (890, 23481), (1335, 15654), (1602, 13045), (2609, 8010), (2670, 7827), (4005, 5218)]