661098860

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1\times {\mathrm{1667}}^1$

素因数の和:2006

約数の個数: 48

約数和(自身を含む): 1412328960

約数和(自身を除く): 751230100

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 251, 316, 395, 502, 790, 1004, 1255, 1580, 1667, 2510, 3334, 5020, 6668, 8335, 16670, 19829, 33340, 39658, 79316, 99145, 131693, 198290, 263386, 396580, 418417, 526772, 658465, 836834, 1316930, 1673668, 2092085, 2633860, 4184170, 8368340, 33054943, 66109886, 132219772, 165274715, 330549430, 661098860]

約数ペア:

[(1, 661098860), (2, 330549430), (4, 165274715), (5, 132219772), (10, 66109886), (20, 33054943), (79, 8368340), (158, 4184170), (251, 2633860), (316, 2092085), (395, 1673668), (502, 1316930), (790, 836834), (1004, 658465), (1255, 526772), (1580, 418417), (1667, 396580), (2510, 263386), (3334, 198290), (5020, 131693), (6668, 99145), (8335, 79316), (16670, 39658), (19829, 33340)]