644016240

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{127781}}^1$

素因数の和:127807

約数の個数: 120

約数和(自身を含む): 2471815008

約数和(自身を除く): 1827798768

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 5040, 127781, 255562, 383343, 511124, 638905, 766686, 894467, 1022248, 1150029, 1277810, 1533372, 1788934, 1916715, 2044496, 2300058, 2555620, 2683401, 3066744, 3577868, 3833430, 4472335, 4600116, 5111240, 5366802, 5750145, 6133488, 7155736, 7666860, 8050203, 8944670, 9200232, 10222480, 10733604, 11500290, 13417005, 14311472, 15333720, 16100406, 17889340, 18400464, 21467208, 23000580, 26834010, 30667440, 32200812, 35778680, 40251015, 42934416, 46001160, 53668020, 64401624, 71557360, 80502030, 92002320, 107336040, 128803248, 161004060, 214672080, 322008120, 644016240]

約数ペア:

[(1, 644016240), (2, 322008120), (3, 214672080), (4, 161004060), (5, 128803248), (6, 107336040), (7, 92002320), (8, 80502030), (9, 71557360), (10, 64401624), (12, 53668020), (14, 46001160), (15, 42934416), (16, 40251015), (18, 35778680), (20, 32200812), (21, 30667440), (24, 26834010), (28, 23000580), (30, 21467208), (35, 18400464), (36, 17889340), (40, 16100406), (42, 15333720), (45, 14311472), (48, 13417005), (56, 11500290), (60, 10733604), (63, 10222480), (70, 9200232), (72, 8944670), (80, 8050203), (84, 7666860), (90, 7155736), (105, 6133488), (112, 5750145), (120, 5366802), (126, 5111240), (140, 4600116), (144, 4472335), (168, 3833430), (180, 3577868), (210, 3066744), (240, 2683401), (252, 2555620), (280, 2300058), (315, 2044496), (336, 1916715), (360, 1788934), (420, 1533372), (504, 1277810), (560, 1150029), (630, 1022248), (720, 894467), (840, 766686), (1008, 638905), (1260, 511124), (1680, 383343), (2520, 255562), (5040, 127781)]