19776505

素因数分解:

$5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 28212480

約数和(自身を除く): 8435975

約数列:

[1, 5, 7, 35, 59, 61, 157, 295, 305, 413, 427, 785, 1099, 2065, 2135, 3599, 5495, 9263, 9577, 17995, 25193, 46315, 47885, 64841, 67039, 125965, 324205, 335195, 565043, 2825215, 3955301, 19776505]

約数ペア:

[(1, 19776505), (5, 3955301), (7, 2825215), (35, 565043), (59, 335195), (61, 324205), (157, 125965), (295, 67039), (305, 64841), (413, 47885), (427, 46315), (785, 25193), (1099, 17995), (2065, 9577), (2135, 9263), (3599, 5495)]