21997380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{523}}^1\times {\mathrm{701}}^1$

素因数の和:1236

約数の個数: 48

約数和(自身を含む): 61798464

約数和(自身を除く): 39801084

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 523, 701, 1046, 1402, 1569, 2092, 2103, 2615, 2804, 3138, 3505, 4206, 5230, 6276, 7010, 7845, 8412, 10460, 10515, 14020, 15690, 21030, 31380, 42060, 366623, 733246, 1099869, 1466492, 1833115, 2199738, 3666230, 4399476, 5499345, 7332460, 10998690, 21997380]

約数ペア:

[(1, 21997380), (2, 10998690), (3, 7332460), (4, 5499345), (5, 4399476), (6, 3666230), (10, 2199738), (12, 1833115), (15, 1466492), (20, 1099869), (30, 733246), (60, 366623), (523, 42060), (701, 31380), (1046, 21030), (1402, 15690), (1569, 14020), (2092, 10515), (2103, 10460), (2615, 8412), (2804, 7845), (3138, 7010), (3505, 6276), (4206, 5230)]