19992012145

素因数分解:

$5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{124147}}^1$

素因数の和:124309

約数の個数: 32

約数和(自身を含む): 28317662208

約数和(自身を除く): 8325650063

約数列:

[1, 5, 7, 35, 43, 107, 215, 301, 535, 749, 1505, 3745, 4601, 23005, 32207, 124147, 161035, 620735, 869029, 4345145, 5338321, 13283729, 26691605, 37368247, 66418645, 92986103, 186841235, 464930515, 571200347, 2856001735, 3998402429, 19992012145]

約数ペア:

[(1, 19992012145), (5, 3998402429), (7, 2856001735), (35, 571200347), (43, 464930515), (107, 186841235), (215, 92986103), (301, 66418645), (535, 37368247), (749, 26691605), (1505, 13283729), (3745, 5338321), (4601, 4345145), (23005, 869029), (32207, 620735), (124147, 161035)]