640081620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{7213}}^1$

素因数の和:7274

約数の個数: 144

約数和(自身を含む): 2126975760

約数和(自身を除く): 1486894140

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 29, 30, 34, 36, 45, 51, 58, 60, 68, 85, 87, 90, 102, 116, 145, 153, 170, 174, 180, 204, 255, 261, 290, 306, 340, 348, 435, 493, 510, 522, 580, 612, 765, 870, 986, 1020, 1044, 1305, 1479, 1530, 1740, 1972, 2465, 2610, 2958, 3060, 4437, 4930, 5220, 5916, 7213, 7395, 8874, 9860, 14426, 14790, 17748, 21639, 22185, 28852, 29580, 36065, 43278, 44370, 64917, 72130, 86556, 88740, 108195, 122621, 129834, 144260, 209177, 216390, 245242, 259668, 324585, 367863, 418354, 432780, 490484, 613105, 627531, 649170, 735726, 836708, 1045885, 1103589, 1226210, 1255062, 1298340, 1471452, 1839315, 1882593, 2091770, 2207178, 2452420, 2510124, 3137655, 3556009, 3678630, 3765186, 4183540, 4414356, 5517945, 6275310, 7112018, 7357260, 7530372, 9412965, 10668027, 11035890, 12550620, 14224036, 17780045, 18825930, 21336054, 22071780, 32004081, 35560090, 37651860, 42672108, 53340135, 64008162, 71120180, 106680270, 128016324, 160020405, 213360540, 320040810, 640081620]

約数ペア:

[(1, 640081620), (2, 320040810), (3, 213360540), (4, 160020405), (5, 128016324), (6, 106680270), (9, 71120180), (10, 64008162), (12, 53340135), (15, 42672108), (17, 37651860), (18, 35560090), (20, 32004081), (29, 22071780), (30, 21336054), (34, 18825930), (36, 17780045), (45, 14224036), (51, 12550620), (58, 11035890), (60, 10668027), (68, 9412965), (85, 7530372), (87, 7357260), (90, 7112018), (102, 6275310), (116, 5517945), (145, 4414356), (153, 4183540), (170, 3765186), (174, 3678630), (180, 3556009), (204, 3137655), (255, 2510124), (261, 2452420), (290, 2207178), (306, 2091770), (340, 1882593), (348, 1839315), (435, 1471452), (493, 1298340), (510, 1255062), (522, 1226210), (580, 1103589), (612, 1045885), (765, 836708), (870, 735726), (986, 649170), (1020, 627531), (1044, 613105), (1305, 490484), (1479, 432780), (1530, 418354), (1740, 367863), (1972, 324585), (2465, 259668), (2610, 245242), (2958, 216390), (3060, 209177), (4437, 144260), (4930, 129834), (5220, 122621), (5916, 108195), (7213, 88740), (7395, 86556), (8874, 72130), (9860, 64917), (14426, 44370), (14790, 43278), (17748, 36065), (21639, 29580), (22185, 28852)]