199920100

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{48761}}^1$

素因数の和:48816

約数の個数: 36

約数和(自身を含む): 444416868

約数和(自身を除く): 244496768

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 48761, 97522, 195044, 243805, 487610, 975220, 1219025, 1999201, 2438050, 3998402, 4876100, 7996804, 9996005, 19992010, 39984020, 49980025, 99960050, 199920100]

約数ペア:

[(1, 199920100), (2, 99960050), (4, 49980025), (5, 39984020), (10, 19992010), (20, 9996005), (25, 7996804), (41, 4876100), (50, 3998402), (82, 2438050), (100, 1999201), (164, 1219025), (205, 975220), (410, 487610), (820, 243805), (1025, 195044), (2050, 97522), (4100, 48761)]