19381175

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:224

約数の個数: 36

約数和(自身を含む): 27211800

約数和(自身を除く): 7830625

約数列:

[1, 5, 11, 25, 43, 55, 121, 149, 215, 275, 473, 605, 745, 1075, 1639, 2365, 3025, 3725, 5203, 6407, 8195, 11825, 18029, 26015, 32035, 40975, 70477, 90145, 130075, 160175, 352385, 450725, 775247, 1761925, 3876235, 19381175]

約数ペア:

[(1, 19381175), (5, 3876235), (11, 1761925), (25, 775247), (43, 450725), (55, 352385), (121, 160175), (149, 130075), (215, 90145), (275, 70477), (473, 40975), (605, 32035), (745, 26015), (1075, 18029), (1639, 11825), (2365, 8195), (3025, 6407), (3725, 5203)]