9978412240

素因数分解:

$2^4\times 5^1\times {\mathrm{1949}}^1\times {\mathrm{63997}}^1$

素因数の和:65959

約数の個数: 40

約数和(自身を含む): 23212074600

約数和(自身を除く): 13233662360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1949, 3898, 7796, 9745, 15592, 19490, 31184, 38980, 63997, 77960, 127994, 155920, 255988, 319985, 511976, 639970, 1023952, 1279940, 2559880, 5119760, 124730153, 249460306, 498920612, 623650765, 997841224, 1247301530, 1995682448, 2494603060, 4989206120, 9978412240]

約数ペア:

[(1, 9978412240), (2, 4989206120), (4, 2494603060), (5, 1995682448), (8, 1247301530), (10, 997841224), (16, 623650765), (20, 498920612), (40, 249460306), (80, 124730153), (1949, 5119760), (3898, 2559880), (7796, 1279940), (9745, 1023952), (15592, 639970), (19490, 511976), (31184, 319985), (38980, 255988), (63997, 155920), (77960, 127994)]