71971720

素因数分解:

$2^3\times 5^1\times {\mathrm{1277}}^1\times {\mathrm{1409}}^1$

素因数の和:2697

約数の個数: 32

約数和(自身を含む): 162178200

約数和(自身を除く): 90206480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1277, 1409, 2554, 2818, 5108, 5636, 6385, 7045, 10216, 11272, 12770, 14090, 25540, 28180, 51080, 56360, 1799293, 3598586, 7197172, 8996465, 14394344, 17992930, 35985860, 71971720]

約数ペア:

[(1, 71971720), (2, 35985860), (4, 17992930), (5, 14394344), (8, 8996465), (10, 7197172), (20, 3598586), (40, 1799293), (1277, 56360), (1409, 51080), (2554, 28180), (2818, 25540), (5108, 14090), (5636, 12770), (6385, 11272), (7045, 10216)]