19123240

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1229}}^1$

素因数の和:1629

約数の個数: 32

約数和(自身を含む): 43173000

約数和(自身を除く): 24049760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1229, 1556, 1945, 2458, 3112, 3890, 4916, 6145, 7780, 9832, 12290, 15560, 24580, 49160, 478081, 956162, 1912324, 2390405, 3824648, 4780810, 9561620, 19123240]

約数ペア:

[(1, 19123240), (2, 9561620), (4, 4780810), (5, 3824648), (8, 2390405), (10, 1912324), (20, 956162), (40, 478081), (389, 49160), (778, 24580), (1229, 15560), (1556, 12290), (1945, 9832), (2458, 7780), (3112, 6145), (3890, 4916)]