21318550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{467}}^1$

素因数の和:573

約数の個数: 48

約数和(自身を含む): 43872192

約数和(自身を除く): 22553642

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 83, 110, 166, 275, 415, 467, 550, 830, 913, 934, 1826, 2075, 2335, 4150, 4565, 4670, 5137, 9130, 10274, 11675, 22825, 23350, 25685, 38761, 45650, 51370, 77522, 128425, 193805, 256850, 387610, 426371, 852742, 969025, 1938050, 2131855, 4263710, 10659275, 21318550]

約数ペア:

[(1, 21318550), (2, 10659275), (5, 4263710), (10, 2131855), (11, 1938050), (22, 969025), (25, 852742), (50, 426371), (55, 387610), (83, 256850), (110, 193805), (166, 128425), (275, 77522), (415, 51370), (467, 45650), (550, 38761), (830, 25685), (913, 23350), (934, 22825), (1826, 11675), (2075, 10274), (2335, 9130), (4150, 5137), (4565, 4670)]