78401840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^2\times {\mathrm{53}}^1$

素因数の和:159

約数の個数: 120

約数和(自身を含む): 207669744

約数和(自身を除く): 129267904

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 41, 44, 53, 55, 80, 82, 88, 106, 110, 164, 176, 205, 212, 220, 265, 328, 410, 424, 440, 451, 530, 583, 656, 820, 848, 880, 902, 1060, 1166, 1640, 1681, 1804, 2120, 2173, 2255, 2332, 2915, 3280, 3362, 3608, 4240, 4346, 4510, 4664, 5830, 6724, 7216, 8405, 8692, 9020, 9328, 10865, 11660, 13448, 16810, 17384, 18040, 18491, 21730, 23320, 23903, 26896, 33620, 34768, 36080, 36982, 43460, 46640, 47806, 67240, 73964, 86920, 89093, 92455, 95612, 119515, 134480, 147928, 173840, 178186, 184910, 191224, 239030, 295856, 356372, 369820, 382448, 445465, 478060, 712744, 739640, 890930, 956120, 980023, 1425488, 1479280, 1781860, 1912240, 1960046, 3563720, 3920092, 4900115, 7127440, 7840184, 9800230, 15680368, 19600460, 39200920, 78401840]

約数ペア:

[(1, 78401840), (2, 39200920), (4, 19600460), (5, 15680368), (8, 9800230), (10, 7840184), (11, 7127440), (16, 4900115), (20, 3920092), (22, 3563720), (40, 1960046), (41, 1912240), (44, 1781860), (53, 1479280), (55, 1425488), (80, 980023), (82, 956120), (88, 890930), (106, 739640), (110, 712744), (164, 478060), (176, 445465), (205, 382448), (212, 369820), (220, 356372), (265, 295856), (328, 239030), (410, 191224), (424, 184910), (440, 178186), (451, 173840), (530, 147928), (583, 134480), (656, 119515), (820, 95612), (848, 92455), (880, 89093), (902, 86920), (1060, 73964), (1166, 67240), (1640, 47806), (1681, 46640), (1804, 43460), (2120, 36982), (2173, 36080), (2255, 34768), (2332, 33620), (2915, 26896), (3280, 23903), (3362, 23320), (3608, 21730), (4240, 18491), (4346, 18040), (4510, 17384), (4664, 16810), (5830, 13448), (6724, 11660), (7216, 10865), (8405, 9328), (8692, 9020)]