399244440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{461}}^1\times {\mathrm{1031}}^1$

素因数の和:1513

約数の個数: 128

約数和(自身を含む): 1373137920

約数和(自身を除く): 973893480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 461, 840, 922, 1031, 1383, 1844, 2062, 2305, 2766, 3093, 3227, 3688, 4124, 4610, 5155, 5532, 6186, 6454, 6915, 7217, 8248, 9220, 9681, 10310, 11064, 12372, 12908, 13830, 14434, 15465, 16135, 18440, 19362, 20620, 21651, 24744, 25816, 27660, 28868, 30930, 32270, 36085, 38724, 41240, 43302, 48405, 55320, 57736, 61860, 64540, 72170, 77448, 86604, 96810, 108255, 123720, 129080, 144340, 173208, 193620, 216510, 288680, 387240, 433020, 475291, 866040, 950582, 1425873, 1901164, 2376455, 2851746, 3327037, 3802328, 4752910, 5703492, 6654074, 7129365, 9505820, 9981111, 11406984, 13308148, 14258730, 16635185, 19011640, 19962222, 26616296, 28517460, 33270370, 39924444, 49905555, 57034920, 66540740, 79848888, 99811110, 133081480, 199622220, 399244440]

約数ペア:

[(1, 399244440), (2, 199622220), (3, 133081480), (4, 99811110), (5, 79848888), (6, 66540740), (7, 57034920), (8, 49905555), (10, 39924444), (12, 33270370), (14, 28517460), (15, 26616296), (20, 19962222), (21, 19011640), (24, 16635185), (28, 14258730), (30, 13308148), (35, 11406984), (40, 9981111), (42, 9505820), (56, 7129365), (60, 6654074), (70, 5703492), (84, 4752910), (105, 3802328), (120, 3327037), (140, 2851746), (168, 2376455), (210, 1901164), (280, 1425873), (420, 950582), (461, 866040), (840, 475291), (922, 433020), (1031, 387240), (1383, 288680), (1844, 216510), (2062, 193620), (2305, 173208), (2766, 144340), (3093, 129080), (3227, 123720), (3688, 108255), (4124, 96810), (4610, 86604), (5155, 77448), (5532, 72170), (6186, 64540), (6454, 61860), (6915, 57736), (7217, 55320), (8248, 48405), (9220, 43302), (9681, 41240), (10310, 38724), (11064, 36085), (12372, 32270), (12908, 30930), (13830, 28868), (14434, 27660), (15465, 25816), (16135, 24744), (18440, 21651), (19362, 20620)]