287779220

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{14549}}^1$

素因数の和:14624

約数の個数: 48

約数和(自身を含む): 645321600

約数和(自身を除く): 357542380

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 860, 989, 1978, 3956, 4945, 9890, 14549, 19780, 29098, 58196, 72745, 145490, 290980, 334627, 625607, 669254, 1251214, 1338508, 1673135, 2502428, 3128035, 3346270, 6256070, 6692540, 12512140, 14388961, 28777922, 57555844, 71944805, 143889610, 287779220]

約数ペア:

[(1, 287779220), (2, 143889610), (4, 71944805), (5, 57555844), (10, 28777922), (20, 14388961), (23, 12512140), (43, 6692540), (46, 6256070), (86, 3346270), (92, 3128035), (115, 2502428), (172, 1673135), (215, 1338508), (230, 1251214), (430, 669254), (460, 625607), (860, 334627), (989, 290980), (1978, 145490), (3956, 72745), (4945, 58196), (9890, 29098), (14549, 19780)]