728360

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 1663200

約数和(自身を除く): 934840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 139, 262, 278, 524, 556, 655, 695, 1048, 1112, 1310, 1390, 2620, 2780, 5240, 5560, 18209, 36418, 72836, 91045, 145672, 182090, 364180, 728360]

約数ペア:

[(1, 728360), (2, 364180), (4, 182090), (5, 145672), (8, 91045), (10, 72836), (20, 36418), (40, 18209), (131, 5560), (139, 5240), (262, 2780), (278, 2620), (524, 1390), (556, 1310), (655, 1112), (695, 1048)]