999989570

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{20479}}^1$

素因数の和:20762

約数の個数: 32

約数和(自身を含む): 1902182400

約数和(自身を除く): 902192830

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 257, 514, 1285, 2570, 4883, 9766, 20479, 24415, 40958, 48830, 102395, 204790, 389101, 778202, 1945505, 3891010, 5263103, 10526206, 26315515, 52631030, 99998957, 199997914, 499994785, 999989570]

約数ペア:

[(1, 999989570), (2, 499994785), (5, 199997914), (10, 99998957), (19, 52631030), (38, 26315515), (95, 10526206), (190, 5263103), (257, 3891010), (514, 1945505), (1285, 778202), (2570, 389101), (4883, 204790), (9766, 102395), (20479, 48830), (24415, 40958)]