646219970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1\times {\mathrm{499}}^1$

素因数の和:771

約数の個数: 64

約数和(自身を含む): 1299024000

約数和(自身を除く): 652804030

約数列:

[1, 2, 5, 10, 11, 22, 55, 61, 110, 122, 193, 305, 386, 499, 610, 671, 965, 998, 1342, 1930, 2123, 2495, 3355, 4246, 4990, 5489, 6710, 10615, 10978, 11773, 21230, 23546, 27445, 30439, 54890, 58865, 60878, 96307, 117730, 129503, 152195, 192614, 259006, 304390, 334829, 481535, 647515, 669658, 963070, 1059377, 1295030, 1674145, 2118754, 3348290, 5296885, 5874727, 10593770, 11749454, 29373635, 58747270, 64621997, 129243994, 323109985, 646219970]

約数ペア:

[(1, 646219970), (2, 323109985), (5, 129243994), (10, 64621997), (11, 58747270), (22, 29373635), (55, 11749454), (61, 10593770), (110, 5874727), (122, 5296885), (193, 3348290), (305, 2118754), (386, 1674145), (499, 1295030), (610, 1059377), (671, 963070), (965, 669658), (998, 647515), (1342, 481535), (1930, 334829), (2123, 304390), (2495, 259006), (3355, 192614), (4246, 152195), (4990, 129503), (5489, 117730), (6710, 96307), (10615, 60878), (10978, 58865), (11773, 54890), (21230, 30439), (23546, 27445)]