20496850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{449}}^1$

素因数の和:555

約数の個数: 48

約数和(自身を含む): 42184800

約数和(自身を除く): 21687950

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 83, 110, 166, 275, 415, 449, 550, 830, 898, 913, 1826, 2075, 2245, 4150, 4490, 4565, 4939, 9130, 9878, 11225, 22450, 22825, 24695, 37267, 45650, 49390, 74534, 123475, 186335, 246950, 372670, 409937, 819874, 931675, 1863350, 2049685, 4099370, 10248425, 20496850]

約数ペア:

[(1, 20496850), (2, 10248425), (5, 4099370), (10, 2049685), (11, 1863350), (22, 931675), (25, 819874), (50, 409937), (55, 372670), (83, 246950), (110, 186335), (166, 123475), (275, 74534), (415, 49390), (449, 45650), (550, 37267), (830, 24695), (898, 22825), (913, 22450), (1826, 11225), (2075, 9878), (2245, 9130), (4150, 4939), (4490, 4565)]