20157970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 43819776

約数和(自身を除く): 23661806

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 43, 70, 74, 86, 181, 185, 215, 259, 301, 362, 370, 430, 518, 602, 905, 1267, 1295, 1505, 1591, 1810, 2534, 2590, 3010, 3182, 6335, 6697, 7783, 7955, 11137, 12670, 13394, 15566, 15910, 22274, 33485, 38915, 46879, 54481, 55685, 66970, 77830, 93758, 108962, 111370, 234395, 272405, 287971, 468790, 544810, 575942, 1439855, 2015797, 2879710, 4031594, 10078985, 20157970]

約数ペア:

[(1, 20157970), (2, 10078985), (5, 4031594), (7, 2879710), (10, 2015797), (14, 1439855), (35, 575942), (37, 544810), (43, 468790), (70, 287971), (74, 272405), (86, 234395), (181, 111370), (185, 108962), (215, 93758), (259, 77830), (301, 66970), (362, 55685), (370, 54481), (430, 46879), (518, 38915), (602, 33485), (905, 22274), (1267, 15910), (1295, 15566), (1505, 13394), (1591, 12670), (1810, 11137), (2534, 7955), (2590, 7783), (3010, 6697), (3182, 6335)]