19999944

素因数分解:

$2^3\times 3^2\times {\mathrm{229}}^1\times {\mathrm{1213}}^1$

素因数の和:1454

約数の個数: 48

約数和(自身を含む): 54447900

約数和(自身を除く): 34447956

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 229, 458, 687, 916, 1213, 1374, 1832, 2061, 2426, 2748, 3639, 4122, 4852, 5496, 7278, 8244, 9704, 10917, 14556, 16488, 21834, 29112, 43668, 87336, 277777, 555554, 833331, 1111108, 1666662, 2222216, 2499993, 3333324, 4999986, 6666648, 9999972, 19999944]

約数ペア:

[(1, 19999944), (2, 9999972), (3, 6666648), (4, 4999986), (6, 3333324), (8, 2499993), (9, 2222216), (12, 1666662), (18, 1111108), (24, 833331), (36, 555554), (72, 277777), (229, 87336), (458, 43668), (687, 29112), (916, 21834), (1213, 16488), (1374, 14556), (1832, 10917), (2061, 9704), (2426, 8244), (2748, 7278), (3639, 5496), (4122, 4852)]