1640961320

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{281}}^1\times {\mathrm{2179}}^1$

素因数の和:2538

約数の個数: 64

約数和(自身を含む): 3762331200

約数和(自身を除く): 2121369880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 281, 335, 536, 562, 670, 1124, 1340, 1405, 2179, 2248, 2680, 2810, 4358, 5620, 8716, 10895, 11240, 17432, 18827, 21790, 37654, 43580, 75308, 87160, 94135, 145993, 150616, 188270, 291986, 376540, 583972, 612299, 729965, 753080, 1167944, 1224598, 1459930, 2449196, 2919860, 3061495, 4898392, 5839720, 6122990, 12245980, 24491960, 41024033, 82048066, 164096132, 205120165, 328192264, 410240330, 820480660, 1640961320]

約数ペア:

[(1, 1640961320), (2, 820480660), (4, 410240330), (5, 328192264), (8, 205120165), (10, 164096132), (20, 82048066), (40, 41024033), (67, 24491960), (134, 12245980), (268, 6122990), (281, 5839720), (335, 4898392), (536, 3061495), (562, 2919860), (670, 2449196), (1124, 1459930), (1340, 1224598), (1405, 1167944), (2179, 753080), (2248, 729965), (2680, 612299), (2810, 583972), (4358, 376540), (5620, 291986), (8716, 188270), (10895, 150616), (11240, 145993), (17432, 94135), (18827, 87160), (21790, 75308), (37654, 43580)]