20550800

素因数分解:

$2^4\times 5^2\times {\mathrm{83}}^1\times {\mathrm{619}}^1$

素因数の和:720

約数の個数: 60

約数和(自身を含む): 50048880

約数和(自身を除く): 29498080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 83, 100, 166, 200, 332, 400, 415, 619, 664, 830, 1238, 1328, 1660, 2075, 2476, 3095, 3320, 4150, 4952, 6190, 6640, 8300, 9904, 12380, 15475, 16600, 24760, 30950, 33200, 49520, 51377, 61900, 102754, 123800, 205508, 247600, 256885, 411016, 513770, 822032, 1027540, 1284425, 2055080, 2568850, 4110160, 5137700, 10275400, 20550800]

約数ペア:

[(1, 20550800), (2, 10275400), (4, 5137700), (5, 4110160), (8, 2568850), (10, 2055080), (16, 1284425), (20, 1027540), (25, 822032), (40, 513770), (50, 411016), (80, 256885), (83, 247600), (100, 205508), (166, 123800), (200, 102754), (332, 61900), (400, 51377), (415, 49520), (619, 33200), (664, 30950), (830, 24760), (1238, 16600), (1328, 15475), (1660, 12380), (2075, 9904), (2476, 8300), (3095, 6640), (3320, 6190), (4150, 4952)]