687889490

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1\times {\mathrm{313}}^1$

素因数の和:651

約数の個数: 64

約数和(自身を含む): 1342915200

約数和(自身を除く): 655025710

約数列:

[1, 2, 5, 10, 19, 38, 43, 86, 95, 190, 215, 269, 313, 430, 538, 626, 817, 1345, 1565, 1634, 2690, 3130, 4085, 5111, 5947, 8170, 10222, 11567, 11894, 13459, 23134, 25555, 26918, 29735, 51110, 57835, 59470, 67295, 84197, 115670, 134590, 168394, 219773, 255721, 420985, 439546, 511442, 841970, 1098865, 1278605, 1599743, 2197730, 2557210, 3199486, 3620471, 7240942, 7998715, 15997430, 18102355, 36204710, 68788949, 137577898, 343944745, 687889490]

約数ペア:

[(1, 687889490), (2, 343944745), (5, 137577898), (10, 68788949), (19, 36204710), (38, 18102355), (43, 15997430), (86, 7998715), (95, 7240942), (190, 3620471), (215, 3199486), (269, 2557210), (313, 2197730), (430, 1599743), (538, 1278605), (626, 1098865), (817, 841970), (1345, 511442), (1565, 439546), (1634, 420985), (2690, 255721), (3130, 219773), (4085, 168394), (5111, 134590), (5947, 115670), (8170, 84197), (10222, 67295), (11567, 59470), (11894, 57835), (13459, 51110), (23134, 29735), (25555, 26918)]