640090440

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{161639}}^1$

素因数の和:161667

約数の個数: 96

約数和(自身を含む): 2269425600

約数和(自身を除く): 1629335160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 132, 165, 180, 198, 220, 264, 330, 360, 396, 440, 495, 660, 792, 990, 1320, 1980, 3960, 161639, 323278, 484917, 646556, 808195, 969834, 1293112, 1454751, 1616390, 1778029, 1939668, 2424585, 2909502, 3232780, 3556058, 3879336, 4849170, 5334087, 5819004, 6465560, 7112116, 7273755, 8890145, 9698340, 10668174, 11638008, 14224232, 14547510, 16002261, 17780290, 19396680, 21336348, 26670435, 29095020, 32004522, 35560580, 42672696, 53340870, 58190040, 64009044, 71121160, 80011305, 106681740, 128018088, 160022610, 213363480, 320045220, 640090440]

約数ペア:

[(1, 640090440), (2, 320045220), (3, 213363480), (4, 160022610), (5, 128018088), (6, 106681740), (8, 80011305), (9, 71121160), (10, 64009044), (11, 58190040), (12, 53340870), (15, 42672696), (18, 35560580), (20, 32004522), (22, 29095020), (24, 26670435), (30, 21336348), (33, 19396680), (36, 17780290), (40, 16002261), (44, 14547510), (45, 14224232), (55, 11638008), (60, 10668174), (66, 9698340), (72, 8890145), (88, 7273755), (90, 7112116), (99, 6465560), (110, 5819004), (120, 5334087), (132, 4849170), (165, 3879336), (180, 3556058), (198, 3232780), (220, 2909502), (264, 2424585), (330, 1939668), (360, 1778029), (396, 1616390), (440, 1454751), (495, 1293112), (660, 969834), (792, 808195), (990, 646556), (1320, 484917), (1980, 323278), (3960, 161639)]