65448820

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{443}}^1$

素因数の和:624

約数の個数: 48

約数和(自身を含む): 140978880

約数和(自身を除く): 75530060

約数列:

[1, 2, 4, 5, 10, 20, 83, 89, 166, 178, 332, 356, 415, 443, 445, 830, 886, 890, 1660, 1772, 1780, 2215, 4430, 7387, 8860, 14774, 29548, 36769, 36935, 39427, 73538, 73870, 78854, 147076, 147740, 157708, 183845, 197135, 367690, 394270, 735380, 788540, 3272441, 6544882, 13089764, 16362205, 32724410, 65448820]

約数ペア:

[(1, 65448820), (2, 32724410), (4, 16362205), (5, 13089764), (10, 6544882), (20, 3272441), (83, 788540), (89, 735380), (166, 394270), (178, 367690), (332, 197135), (356, 183845), (415, 157708), (443, 147740), (445, 147076), (830, 78854), (886, 73870), (890, 73538), (1660, 39427), (1772, 36935), (1780, 36769), (2215, 29548), (4430, 14774), (7387, 8860)]