20981316

素因数分解:

$2^2\times 3^1\times {\mathrm{61}}^1\times {\mathrm{28663}}^1$

素因数の和:28731

約数の個数: 24

約数和(自身を含む): 49760704

約数和(自身を除く): 28779388

約数列:

[1, 2, 3, 4, 6, 12, 61, 122, 183, 244, 366, 732, 28663, 57326, 85989, 114652, 171978, 343956, 1748443, 3496886, 5245329, 6993772, 10490658, 20981316]

約数ペア:

[(1, 20981316), (2, 10490658), (3, 6993772), (4, 5245329), (6, 3496886), (12, 1748443), (61, 343956), (122, 171978), (183, 114652), (244, 85989), (366, 57326), (732, 28663)]