20188880

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{3457}}^1$

素因数の和:3543

約数の個数: 40

約数和(自身を含む): 47595912

約数和(自身を除く): 27407032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 3457, 5840, 6914, 13828, 17285, 27656, 34570, 55312, 69140, 138280, 252361, 276560, 504722, 1009444, 1261805, 2018888, 2523610, 4037776, 5047220, 10094440, 20188880]

約数ペア:

[(1, 20188880), (2, 10094440), (4, 5047220), (5, 4037776), (8, 2523610), (10, 2018888), (16, 1261805), (20, 1009444), (40, 504722), (73, 276560), (80, 252361), (146, 138280), (292, 69140), (365, 55312), (584, 34570), (730, 27656), (1168, 17285), (1460, 13828), (2920, 6914), (3457, 5840)]