19980930147

素因数分解:

$3^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1\times {\mathrm{839}}^1\times {\mathrm{857}}^1$

素因数の和:1915

約数の個数: 32

約数和(自身を含む): 27329702400

約数和(自身を除く): 7348772253

約数列:

[1, 3, 59, 157, 177, 471, 839, 857, 2517, 2571, 9263, 27789, 49501, 50563, 131723, 134549, 148503, 151689, 395169, 403647, 719023, 2157069, 7771657, 7938391, 23314971, 23815173, 42422357, 112886611, 127267071, 338659833, 6660310049, 19980930147]

約数ペア:

[(1, 19980930147), (3, 6660310049), (59, 338659833), (157, 127267071), (177, 112886611), (471, 42422357), (839, 23815173), (857, 23314971), (2517, 7938391), (2571, 7771657), (9263, 2157069), (27789, 719023), (49501, 403647), (50563, 395169), (131723, 151689), (134549, 148503)]