81590390

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{269}}^1\times {\mathrm{619}}^1$

素因数の和:909

約数の個数: 48

約数和(自身を含む): 171752400

約数和(自身を除く): 90162010

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 269, 490, 538, 619, 1238, 1345, 1883, 2690, 3095, 3766, 4333, 6190, 8666, 9415, 13181, 18830, 21665, 26362, 30331, 43330, 60662, 65905, 131810, 151655, 166511, 303310, 333022, 832555, 1165577, 1665110, 2331154, 5827885, 8159039, 11655770, 16318078, 40795195, 81590390]

約数ペア:

[(1, 81590390), (2, 40795195), (5, 16318078), (7, 11655770), (10, 8159039), (14, 5827885), (35, 2331154), (49, 1665110), (70, 1165577), (98, 832555), (245, 333022), (269, 303310), (490, 166511), (538, 151655), (619, 131810), (1238, 65905), (1345, 60662), (1883, 43330), (2690, 30331), (3095, 26362), (3766, 21665), (4333, 18830), (6190, 13181), (8666, 9415)]