201216990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{515941}}^1$

素因数の和:515964

約数の個数: 32

約数和(自身を含む): 520069536

約数和(自身を除く): 318852546

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 515941, 1031882, 1547823, 2579705, 3095646, 5159410, 6707233, 7739115, 13414466, 15478230, 20121699, 33536165, 40243398, 67072330, 100608495, 201216990]

約数ペア:

[(1, 201216990), (2, 100608495), (3, 67072330), (5, 40243398), (6, 33536165), (10, 20121699), (13, 15478230), (15, 13414466), (26, 7739115), (30, 6707233), (39, 5159410), (65, 3095646), (78, 2579705), (130, 1547823), (195, 1031882), (390, 515941)]