19124720

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3919}}^1$

素因数の和:3993

約数の個数: 40

約数和(自身を含む): 45205440

約数和(自身を除く): 26080720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 3919, 4880, 7838, 15676, 19595, 31352, 39190, 62704, 78380, 156760, 239059, 313520, 478118, 956236, 1195295, 1912472, 2390590, 3824944, 4781180, 9562360, 19124720]

約数ペア:

[(1, 19124720), (2, 9562360), (4, 4781180), (5, 3824944), (8, 2390590), (10, 1912472), (16, 1195295), (20, 956236), (40, 478118), (61, 313520), (80, 239059), (122, 156760), (244, 78380), (305, 62704), (488, 39190), (610, 31352), (976, 19595), (1220, 15676), (2440, 7838), (3919, 4880)]