81720990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{69847}}^1$

素因数の和:69873

約数の個数: 48

約数和(自身を含む): 228822048

約数和(自身を除く): 147101058

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 90, 117, 130, 195, 234, 390, 585, 1170, 69847, 139694, 209541, 349235, 419082, 628623, 698470, 908011, 1047705, 1257246, 1816022, 2095410, 2724033, 3143115, 4540055, 5448066, 6286230, 8172099, 9080110, 13620165, 16344198, 27240330, 40860495, 81720990]

約数ペア:

[(1, 81720990), (2, 40860495), (3, 27240330), (5, 16344198), (6, 13620165), (9, 9080110), (10, 8172099), (13, 6286230), (15, 5448066), (18, 4540055), (26, 3143115), (30, 2724033), (39, 2095410), (45, 1816022), (65, 1257246), (78, 1047705), (90, 908011), (117, 698470), (130, 628623), (195, 419082), (234, 349235), (390, 209541), (585, 139694), (1170, 69847)]