641842990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{11689}}^1$

素因数の和:11749

約数の個数: 48

約数和(自身を含む): 1291978800

約数和(自身を除く): 650135810

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 85, 95, 170, 190, 289, 323, 578, 646, 1445, 1615, 2890, 3230, 5491, 10982, 11689, 23378, 27455, 54910, 58445, 116890, 198713, 222091, 397426, 444182, 993565, 1110455, 1987130, 2220910, 3378121, 3775547, 6756242, 7551094, 16890605, 18877735, 33781210, 37755470, 64184299, 128368598, 320921495, 641842990]

約数ペア:

[(1, 641842990), (2, 320921495), (5, 128368598), (10, 64184299), (17, 37755470), (19, 33781210), (34, 18877735), (38, 16890605), (85, 7551094), (95, 6756242), (170, 3775547), (190, 3378121), (289, 2220910), (323, 1987130), (578, 1110455), (646, 993565), (1445, 444182), (1615, 397426), (2890, 222091), (3230, 198713), (5491, 116890), (10982, 58445), (11689, 54910), (23378, 27455)]