28851440

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{2753}}^1$

素因数の和:2897

約数の個数: 40

約数和(自身を含む): 67616208

約数和(自身を除く): 38764768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 2096, 2620, 2753, 5240, 5506, 10480, 11012, 13765, 22024, 27530, 44048, 55060, 110120, 220240, 360643, 721286, 1442572, 1803215, 2885144, 3606430, 5770288, 7212860, 14425720, 28851440]

約数ペア:

[(1, 28851440), (2, 14425720), (4, 7212860), (5, 5770288), (8, 3606430), (10, 2885144), (16, 1803215), (20, 1442572), (40, 721286), (80, 360643), (131, 220240), (262, 110120), (524, 55060), (655, 44048), (1048, 27530), (1310, 22024), (2096, 13765), (2620, 11012), (2753, 10480), (5240, 5506)]