20018900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{18199}}^1$

素因数の和:18224

約数の個数: 36

約数和(自身を含む): 47392800

約数和(自身を除く): 27373900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 18199, 36398, 72796, 90995, 181990, 200189, 363980, 400378, 454975, 800756, 909950, 1000945, 1819900, 2001890, 4003780, 5004725, 10009450, 20018900]

約数ペア:

[(1, 20018900), (2, 10009450), (4, 5004725), (5, 4003780), (10, 2001890), (11, 1819900), (20, 1000945), (22, 909950), (25, 800756), (44, 454975), (50, 400378), (55, 363980), (100, 200189), (110, 181990), (220, 90995), (275, 72796), (550, 36398), (1100, 18199)]