221480

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{113}}^1$

素因数の和:138

約数の個数: 48

約数和(自身を含む): 584820

約数和(自身を除く): 363340

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 113, 140, 196, 226, 245, 280, 392, 452, 490, 565, 791, 904, 980, 1130, 1582, 1960, 2260, 3164, 3955, 4520, 5537, 6328, 7910, 11074, 15820, 22148, 27685, 31640, 44296, 55370, 110740, 221480]

約数ペア:

[(1, 221480), (2, 110740), (4, 55370), (5, 44296), (7, 31640), (8, 27685), (10, 22148), (14, 15820), (20, 11074), (28, 7910), (35, 6328), (40, 5537), (49, 4520), (56, 3955), (70, 3164), (98, 2260), (113, 1960), (140, 1582), (196, 1130), (226, 980), (245, 904), (280, 791), (392, 565), (452, 490)]