201921321

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:262

約数の個数: 64

約数和(自身を含む): 333398016

約数和(自身を除く): 131476695

約数列:

[1, 3, 7, 21, 31, 37, 83, 93, 101, 111, 217, 249, 259, 303, 581, 651, 707, 777, 1147, 1743, 2121, 2573, 3071, 3131, 3441, 3737, 7719, 8029, 8383, 9213, 9393, 11211, 18011, 21497, 21917, 24087, 25149, 26159, 54033, 58681, 64491, 65751, 78477, 95201, 115847, 176043, 259873, 285603, 310171, 347541, 666407, 779619, 810929, 930513, 1819111, 1999221, 2171197, 2432787, 5457333, 6513591, 9615301, 28845903, 67307107, 201921321]

約数ペア:

[(1, 201921321), (3, 67307107), (7, 28845903), (21, 9615301), (31, 6513591), (37, 5457333), (83, 2432787), (93, 2171197), (101, 1999221), (111, 1819111), (217, 930513), (249, 810929), (259, 779619), (303, 666407), (581, 347541), (651, 310171), (707, 285603), (777, 259873), (1147, 176043), (1743, 115847), (2121, 95201), (2573, 78477), (3071, 65751), (3131, 64491), (3441, 58681), (3737, 54033), (7719, 26159), (8029, 25149), (8383, 24087), (9213, 21917), (9393, 21497), (11211, 18011)]