691390

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1$

素因数の和:121

約数の個数: 48

約数和(自身を含む): 1551312

約数和(自身を除く): 859922

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 49, 70, 83, 85, 98, 119, 166, 170, 238, 245, 415, 490, 581, 595, 830, 833, 1162, 1190, 1411, 1666, 2822, 2905, 4067, 4165, 5810, 7055, 8134, 8330, 9877, 14110, 19754, 20335, 40670, 49385, 69139, 98770, 138278, 345695, 691390]

約数ペア:

[(1, 691390), (2, 345695), (5, 138278), (7, 98770), (10, 69139), (14, 49385), (17, 40670), (34, 20335), (35, 19754), (49, 14110), (70, 9877), (83, 8330), (85, 8134), (98, 7055), (119, 5810), (166, 4165), (170, 4067), (238, 2905), (245, 2822), (415, 1666), (490, 1411), (581, 1190), (595, 1162), (830, 833)]