639521520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{242243}}^1$

素因数の和:242270

約数の個数: 80

約数和(自身を含む): 2162754432

約数和(自身を除く): 1523232912

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 242243, 484486, 726729, 968972, 1211215, 1453458, 1937944, 2422430, 2664673, 2906916, 3633645, 3875888, 4844860, 5329346, 5813832, 7267290, 7994019, 9689720, 10658692, 11627664, 13323365, 14534580, 15988038, 19379440, 21317384, 26646730, 29069160, 31976076, 39970095, 42634768, 53293460, 58138320, 63952152, 79940190, 106586920, 127904304, 159880380, 213173840, 319760760, 639521520]

約数ペア:

[(1, 639521520), (2, 319760760), (3, 213173840), (4, 159880380), (5, 127904304), (6, 106586920), (8, 79940190), (10, 63952152), (11, 58138320), (12, 53293460), (15, 42634768), (16, 39970095), (20, 31976076), (22, 29069160), (24, 26646730), (30, 21317384), (33, 19379440), (40, 15988038), (44, 14534580), (48, 13323365), (55, 11627664), (60, 10658692), (66, 9689720), (80, 7994019), (88, 7267290), (110, 5813832), (120, 5329346), (132, 4844860), (165, 3875888), (176, 3633645), (220, 2906916), (240, 2664673), (264, 2422430), (330, 1937944), (440, 1453458), (528, 1211215), (660, 968972), (880, 726729), (1320, 484486), (2640, 242243)]