642904815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1\times {\mathrm{751}}^1$

素因数の和:1060

約数の個数: 64

約数和(自身を含む): 1219756032

約数和(自身を除く): 576851217

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 105, 155, 217, 263, 465, 651, 751, 789, 1085, 1315, 1841, 2253, 3255, 3755, 3945, 5257, 5523, 8153, 9205, 11265, 15771, 23281, 24459, 26285, 27615, 40765, 57071, 69843, 78855, 116405, 122295, 162967, 171213, 197513, 285355, 349215, 488901, 592539, 814835, 856065, 987565, 1382591, 2444505, 2962695, 4147773, 6122903, 6912955, 18368709, 20738865, 30614515, 42860321, 91843545, 128580963, 214301605, 642904815]

約数ペア:

[(1, 642904815), (3, 214301605), (5, 128580963), (7, 91843545), (15, 42860321), (21, 30614515), (31, 20738865), (35, 18368709), (93, 6912955), (105, 6122903), (155, 4147773), (217, 2962695), (263, 2444505), (465, 1382591), (651, 987565), (751, 856065), (789, 814835), (1085, 592539), (1315, 488901), (1841, 349215), (2253, 285355), (3255, 197513), (3755, 171213), (3945, 162967), (5257, 122295), (5523, 116405), (8153, 78855), (9205, 69843), (11265, 57071), (15771, 40765), (23281, 27615), (24459, 26285)]