21572220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1$

素因数の和:307

約数の個数: 96

約数和(自身を含む): 64512000

約数和(自身を除く): 42939780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 127, 149, 190, 228, 254, 285, 298, 380, 381, 447, 508, 570, 596, 635, 745, 762, 894, 1140, 1270, 1490, 1524, 1788, 1905, 2235, 2413, 2540, 2831, 2980, 3810, 4470, 4826, 5662, 7239, 7620, 8493, 8940, 9652, 11324, 12065, 14155, 14478, 16986, 18923, 24130, 28310, 28956, 33972, 36195, 37846, 42465, 48260, 56620, 56769, 72390, 75692, 84930, 94615, 113538, 144780, 169860, 189230, 227076, 283845, 359537, 378460, 567690, 719074, 1078611, 1135380, 1438148, 1797685, 2157222, 3595370, 4314444, 5393055, 7190740, 10786110, 21572220]

約数ペア:

[(1, 21572220), (2, 10786110), (3, 7190740), (4, 5393055), (5, 4314444), (6, 3595370), (10, 2157222), (12, 1797685), (15, 1438148), (19, 1135380), (20, 1078611), (30, 719074), (38, 567690), (57, 378460), (60, 359537), (76, 283845), (95, 227076), (114, 189230), (127, 169860), (149, 144780), (190, 113538), (228, 94615), (254, 84930), (285, 75692), (298, 72390), (380, 56769), (381, 56620), (447, 48260), (508, 42465), (570, 37846), (596, 36195), (635, 33972), (745, 28956), (762, 28310), (894, 24130), (1140, 18923), (1270, 16986), (1490, 14478), (1524, 14155), (1788, 12065), (1905, 11324), (2235, 9652), (2413, 8940), (2540, 8493), (2831, 7620), (2980, 7239), (3810, 5662), (4470, 4826)]