31239890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{3191}}^1$

素因数の和:3298

約数の個数: 32

約数和(自身を含む): 62052480

約数和(自身を除く): 30812590

約数列:

[1, 2, 5, 10, 11, 22, 55, 89, 110, 178, 445, 890, 979, 1958, 3191, 4895, 6382, 9790, 15955, 31910, 35101, 70202, 175505, 283999, 351010, 567998, 1419995, 2839990, 3123989, 6247978, 15619945, 31239890]

約数ペア:

[(1, 31239890), (2, 15619945), (5, 6247978), (10, 3123989), (11, 2839990), (22, 1419995), (55, 567998), (89, 351010), (110, 283999), (178, 175505), (445, 70202), (890, 35101), (979, 31910), (1958, 15955), (3191, 9790), (4895, 6382)]