21935780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{433}}^1$

素因数の和:608

約数の個数: 48

約数和(自身を含む): 49215600

約数和(自身を除く): 27279820

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 149, 170, 298, 340, 433, 596, 745, 866, 1490, 1732, 2165, 2533, 2980, 4330, 5066, 7361, 8660, 10132, 12665, 14722, 25330, 29444, 36805, 50660, 64517, 73610, 129034, 147220, 258068, 322585, 645170, 1096789, 1290340, 2193578, 4387156, 5483945, 10967890, 21935780]

約数ペア:

[(1, 21935780), (2, 10967890), (4, 5483945), (5, 4387156), (10, 2193578), (17, 1290340), (20, 1096789), (34, 645170), (68, 322585), (85, 258068), (149, 147220), (170, 129034), (298, 73610), (340, 64517), (433, 50660), (596, 36805), (745, 29444), (866, 25330), (1490, 14722), (1732, 12665), (2165, 10132), (2533, 8660), (2980, 7361), (4330, 5066)]