19447840

素因数分解:

$2^5\times 5^1\times {\mathrm{197}}^1\times {\mathrm{617}}^1$

素因数の和:829

約数の個数: 48

約数和(自身を含む): 46253592

約数和(自身を除く): 26805752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 197, 394, 617, 788, 985, 1234, 1576, 1970, 2468, 3085, 3152, 3940, 4936, 6170, 6304, 7880, 9872, 12340, 15760, 19744, 24680, 31520, 49360, 98720, 121549, 243098, 486196, 607745, 972392, 1215490, 1944784, 2430980, 3889568, 4861960, 9723920, 19447840]

約数ペア:

[(1, 19447840), (2, 9723920), (4, 4861960), (5, 3889568), (8, 2430980), (10, 1944784), (16, 1215490), (20, 972392), (32, 607745), (40, 486196), (80, 243098), (160, 121549), (197, 98720), (394, 49360), (617, 31520), (788, 24680), (985, 19744), (1234, 15760), (1576, 12340), (1970, 9872), (2468, 7880), (3085, 6304), (3152, 6170), (3940, 4936)]