19540773

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 33860736

約数和(自身を除く): 14319963

約数列:

[1, 3, 7, 9, 21, 37, 63, 83, 101, 111, 249, 259, 303, 333, 581, 707, 747, 777, 909, 1743, 2121, 2331, 3071, 3737, 5229, 6363, 8383, 9213, 11211, 21497, 25149, 26159, 27639, 33633, 58681, 64491, 75447, 78477, 176043, 193473, 235431, 310171, 528129, 930513, 2171197, 2791539, 6513591, 19540773]

約数ペア:

[(1, 19540773), (3, 6513591), (7, 2791539), (9, 2171197), (21, 930513), (37, 528129), (63, 310171), (83, 235431), (101, 193473), (111, 176043), (249, 78477), (259, 75447), (303, 64491), (333, 58681), (581, 33633), (707, 27639), (747, 26159), (777, 25149), (909, 21497), (1743, 11211), (2121, 9213), (2331, 8383), (3071, 6363), (3737, 5229)]