281720880

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{55897}}^1$

素因数の和:55923

約数の個数: 120

約数和(自身を含む): 1081290912

約数和(自身を除く): 799570032

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, 55897, 111794, 167691, 223588, 279485, 335382, 391279, 447176, 503073, 558970, 670764, 782558, 838455, 894352, 1006146, 1117940, 1173837, 1341528, 1565116, 1676910, 1956395, 2012292, 2235880, 2347674, 2515365, 2683056, 3130232, 3353820, 3521511, 3912790, 4024584, 4471760, 4695348, 5030730, 5869185, 6260464, 6707640, 7043022, 7825580, 8049168, 9390696, 10061460, 11738370, 13415280, 14086044, 15651160, 17607555, 18781392, 20122920, 23476740, 28172088, 31302320, 35215110, 40245840, 46953480, 56344176, 70430220, 93906960, 140860440, 281720880]

約数ペア:

[(1, 281720880), (2, 140860440), (3, 93906960), (4, 70430220), (5, 56344176), (6, 46953480), (7, 40245840), (8, 35215110), (9, 31302320), (10, 28172088), (12, 23476740), (14, 20122920), (15, 18781392), (16, 17607555), (18, 15651160), (20, 14086044), (21, 13415280), (24, 11738370), (28, 10061460), (30, 9390696), (35, 8049168), (36, 7825580), (40, 7043022), (42, 6707640), (45, 6260464), (48, 5869185), (56, 5030730), (60, 4695348), (63, 4471760), (70, 4024584), (72, 3912790), (80, 3521511), (84, 3353820), (90, 3130232), (105, 2683056), (112, 2515365), (120, 2347674), (126, 2235880), (140, 2012292), (144, 1956395), (168, 1676910), (180, 1565116), (210, 1341528), (240, 1173837), (252, 1117940), (280, 1006146), (315, 894352), (336, 838455), (360, 782558), (420, 670764), (504, 558970), (560, 503073), (630, 447176), (720, 391279), (840, 335382), (1008, 279485), (1260, 223588), (1680, 167691), (2520, 111794), (5040, 55897)]