21215202484

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{33857}}^1$

素因数の和:34037

約数の個数: 72

約数和(自身を含む): 45391389120

約数和(自身を除く): 24176186636

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 92, 98, 139, 161, 196, 278, 322, 556, 644, 973, 1127, 1946, 2254, 3197, 3892, 4508, 6394, 6811, 12788, 13622, 22379, 27244, 33857, 44758, 67714, 89516, 135428, 156653, 236999, 313306, 473998, 626612, 778711, 947996, 1557422, 1658993, 3114844, 3317986, 4706123, 5450977, 6635972, 9412246, 10901954, 18824492, 21803908, 32942861, 38156839, 65885722, 76313678, 108240829, 131771444, 152627356, 216481658, 230600027, 432963316, 461200054, 757685803, 922400108, 1515371606, 3030743212, 5303800621, 10607601242, 21215202484]

約数ペア:

[(1, 21215202484), (2, 10607601242), (4, 5303800621), (7, 3030743212), (14, 1515371606), (23, 922400108), (28, 757685803), (46, 461200054), (49, 432963316), (92, 230600027), (98, 216481658), (139, 152627356), (161, 131771444), (196, 108240829), (278, 76313678), (322, 65885722), (556, 38156839), (644, 32942861), (973, 21803908), (1127, 18824492), (1946, 10901954), (2254, 9412246), (3197, 6635972), (3892, 5450977), (4508, 4706123), (6394, 3317986), (6811, 3114844), (12788, 1658993), (13622, 1557422), (22379, 947996), (27244, 778711), (33857, 626612), (44758, 473998), (67714, 313306), (89516, 236999), (135428, 156653)]