21434960

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15761}}^1$

素因数の和:15791

約数の個数: 40

約数和(自身を含む): 52771176

約数和(自身を除く): 31336216

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15761, 31522, 63044, 78805, 126088, 157610, 252176, 267937, 315220, 535874, 630440, 1071748, 1260880, 1339685, 2143496, 2679370, 4286992, 5358740, 10717480, 21434960]

約数ペア:

[(1, 21434960), (2, 10717480), (4, 5358740), (5, 4286992), (8, 2679370), (10, 2143496), (16, 1339685), (17, 1260880), (20, 1071748), (34, 630440), (40, 535874), (68, 315220), (80, 267937), (85, 252176), (136, 157610), (170, 126088), (272, 78805), (340, 63044), (680, 31522), (1360, 15761)]