31395987

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{7019}}^1$

素因数の和:7103

約数の個数: 24

約数和(自身を含む): 52565760

約数和(自身を除く): 21169773

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 7019, 21057, 49133, 63171, 147399, 442197, 498349, 1495047, 3488443, 4485141, 10465329, 31395987]

約数ペア:

[(1, 31395987), (3, 10465329), (7, 4485141), (9, 3488443), (21, 1495047), (63, 498349), (71, 442197), (213, 147399), (497, 63171), (639, 49133), (1491, 21057), (4473, 7019)]