15420920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{9403}}^1$

素因数の和:9455

約数の個数: 32

約数和(自身を含む): 35547120

約数和(自身を除く): 20126200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 9403, 18806, 37612, 47015, 75224, 94030, 188060, 376120, 385523, 771046, 1542092, 1927615, 3084184, 3855230, 7710460, 15420920]

約数ペア:

[(1, 15420920), (2, 7710460), (4, 3855230), (5, 3084184), (8, 1927615), (10, 1542092), (20, 771046), (40, 385523), (41, 376120), (82, 188060), (164, 94030), (205, 75224), (328, 47015), (410, 37612), (820, 18806), (1640, 9403)]