198131990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{2909}}^1$

素因数の和:3069

約数の個数: 48

約数和(自身を含む): 417992400

約数和(自身を除く): 219860410

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 139, 245, 278, 490, 695, 973, 1390, 1946, 2909, 4865, 5818, 6811, 9730, 13622, 14545, 20363, 29090, 34055, 40726, 68110, 101815, 142541, 203630, 285082, 404351, 712705, 808702, 1425410, 2021755, 2830457, 4043510, 5660914, 14152285, 19813199, 28304570, 39626398, 99065995, 198131990]

約数ペア:

[(1, 198131990), (2, 99065995), (5, 39626398), (7, 28304570), (10, 19813199), (14, 14152285), (35, 5660914), (49, 4043510), (70, 2830457), (98, 2021755), (139, 1425410), (245, 808702), (278, 712705), (490, 404351), (695, 285082), (973, 203630), (1390, 142541), (1946, 101815), (2909, 68110), (4865, 40726), (5818, 34055), (6811, 29090), (9730, 20363), (13622, 14545)]