161985420

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{99991}}^1$

素因数の和:100012

約数の個数: 60

約数和(自身を含む): 508159344

約数和(自身を除く): 346173924

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 99991, 199982, 299973, 399964, 499955, 599946, 899919, 999910, 1199892, 1499865, 1799838, 1999820, 2699757, 2999730, 3599676, 4499595, 5399514, 5999460, 8099271, 8999190, 10799028, 13498785, 16198542, 17998380, 26997570, 32397084, 40496355, 53995140, 80992710, 161985420]

約数ペア:

[(1, 161985420), (2, 80992710), (3, 53995140), (4, 40496355), (5, 32397084), (6, 26997570), (9, 17998380), (10, 16198542), (12, 13498785), (15, 10799028), (18, 8999190), (20, 8099271), (27, 5999460), (30, 5399514), (36, 4499595), (45, 3599676), (54, 2999730), (60, 2699757), (81, 1999820), (90, 1799838), (108, 1499865), (135, 1199892), (162, 999910), (180, 899919), (270, 599946), (324, 499955), (405, 399964), (540, 299973), (810, 199982), (1620, 99991)]