215530861

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{313}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 288658944

約数和(自身を除く): 73128083

約数列:

[1, 7, 13, 23, 47, 49, 91, 161, 299, 313, 329, 611, 637, 1081, 1127, 2093, 2191, 2303, 4069, 4277, 7199, 7567, 14053, 14651, 14711, 15337, 28483, 29939, 50393, 52969, 93587, 98371, 102977, 191243, 199381, 338353, 352751, 655109, 688597, 720839, 1338701, 2368471, 4398589, 4585763, 9370907, 16579297, 30790123, 215530861]

約数ペア:

[(1, 215530861), (7, 30790123), (13, 16579297), (23, 9370907), (47, 4585763), (49, 4398589), (91, 2368471), (161, 1338701), (299, 720839), (313, 688597), (329, 655109), (611, 352751), (637, 338353), (1081, 199381), (1127, 191243), (2093, 102977), (2191, 98371), (2303, 93587), (4069, 52969), (4277, 50393), (7199, 29939), (7567, 28483), (14053, 15337), (14651, 14711)]