208023640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{151}}^1$

素因数の和:305

約数の個数: 128

約数和(自身を含む): 535818240

約数和(自身を除く): 327794600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 101, 110, 124, 151, 155, 202, 220, 248, 302, 310, 341, 404, 440, 505, 604, 620, 682, 755, 808, 1010, 1111, 1208, 1240, 1364, 1510, 1661, 1705, 2020, 2222, 2728, 3020, 3131, 3322, 3410, 4040, 4444, 4681, 5555, 6040, 6262, 6644, 6820, 8305, 8888, 9362, 11110, 12524, 13288, 13640, 15251, 15655, 16610, 18724, 22220, 23405, 25048, 30502, 31310, 33220, 34441, 37448, 44440, 46810, 51491, 61004, 62620, 66440, 68882, 76255, 93620, 102982, 122008, 125240, 137764, 152510, 167761, 172205, 187240, 205964, 257455, 275528, 305020, 335522, 344410, 411928, 472781, 514910, 610040, 671044, 688820, 838805, 945562, 1029820, 1342088, 1377640, 1677610, 1891124, 2059640, 2363905, 3355220, 3782248, 4727810, 5200591, 6710440, 9455620, 10401182, 18911240, 20802364, 26002955, 41604728, 52005910, 104011820, 208023640]

約数ペア:

[(1, 208023640), (2, 104011820), (4, 52005910), (5, 41604728), (8, 26002955), (10, 20802364), (11, 18911240), (20, 10401182), (22, 9455620), (31, 6710440), (40, 5200591), (44, 4727810), (55, 3782248), (62, 3355220), (88, 2363905), (101, 2059640), (110, 1891124), (124, 1677610), (151, 1377640), (155, 1342088), (202, 1029820), (220, 945562), (248, 838805), (302, 688820), (310, 671044), (341, 610040), (404, 514910), (440, 472781), (505, 411928), (604, 344410), (620, 335522), (682, 305020), (755, 275528), (808, 257455), (1010, 205964), (1111, 187240), (1208, 172205), (1240, 167761), (1364, 152510), (1510, 137764), (1661, 125240), (1705, 122008), (2020, 102982), (2222, 93620), (2728, 76255), (3020, 68882), (3131, 66440), (3322, 62620), (3410, 61004), (4040, 51491), (4444, 46810), (4681, 44440), (5555, 37448), (6040, 34441), (6262, 33220), (6644, 31310), (6820, 30502), (8305, 25048), (8888, 23405), (9362, 22220), (11110, 18724), (12524, 16610), (13288, 15655), (13640, 15251)]