254218040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{379}}^1\times {\mathrm{409}}^1$

素因数の和:840

約数の個数: 64

約数和(自身を含む): 588924000

約数和(自身を除く): 334705960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 379, 409, 410, 758, 818, 820, 1516, 1636, 1640, 1895, 2045, 3032, 3272, 3790, 4090, 7580, 8180, 15160, 15539, 16360, 16769, 31078, 33538, 62156, 67076, 77695, 83845, 124312, 134152, 155011, 155390, 167690, 310022, 310780, 335380, 620044, 621560, 670760, 775055, 1240088, 1550110, 3100220, 6200440, 6355451, 12710902, 25421804, 31777255, 50843608, 63554510, 127109020, 254218040]

約数ペア:

[(1, 254218040), (2, 127109020), (4, 63554510), (5, 50843608), (8, 31777255), (10, 25421804), (20, 12710902), (40, 6355451), (41, 6200440), (82, 3100220), (164, 1550110), (205, 1240088), (328, 775055), (379, 670760), (409, 621560), (410, 620044), (758, 335380), (818, 310780), (820, 310022), (1516, 167690), (1636, 155390), (1640, 155011), (1895, 134152), (2045, 124312), (3032, 83845), (3272, 77695), (3790, 67076), (4090, 62156), (7580, 33538), (8180, 31078), (15160, 16769), (15539, 16360)]