641340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{509}}^1$

素因数の和:531

約数の個数: 72

約数和(自身を含む): 2227680

約数和(自身を除く): 1586340

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 509, 630, 1018, 1260, 1527, 2036, 2545, 3054, 3563, 4581, 5090, 6108, 7126, 7635, 9162, 10180, 10689, 14252, 15270, 17815, 18324, 21378, 22905, 30540, 32067, 35630, 42756, 45810, 53445, 64134, 71260, 91620, 106890, 128268, 160335, 213780, 320670, 641340]

約数ペア:

[(1, 641340), (2, 320670), (3, 213780), (4, 160335), (5, 128268), (6, 106890), (7, 91620), (9, 71260), (10, 64134), (12, 53445), (14, 45810), (15, 42756), (18, 35630), (20, 32067), (21, 30540), (28, 22905), (30, 21378), (35, 18324), (36, 17815), (42, 15270), (45, 14252), (60, 10689), (63, 10180), (70, 9162), (84, 7635), (90, 7126), (105, 6108), (126, 5090), (140, 4581), (180, 3563), (210, 3054), (252, 2545), (315, 2036), (420, 1527), (509, 1260), (630, 1018)]