38878840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{971}}^1$

素因数の和:1013

約数の個数: 128

約数和(自身を含む): 117573120

約数和(自身を除く): 78694280

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 88, 91, 104, 110, 130, 140, 143, 154, 182, 220, 260, 280, 286, 308, 364, 385, 440, 455, 520, 572, 616, 715, 728, 770, 910, 971, 1001, 1144, 1430, 1540, 1820, 1942, 2002, 2860, 3080, 3640, 3884, 4004, 4855, 5005, 5720, 6797, 7768, 8008, 9710, 10010, 10681, 12623, 13594, 19420, 20020, 21362, 25246, 27188, 33985, 38840, 40040, 42724, 50492, 53405, 54376, 63115, 67970, 74767, 85448, 88361, 100984, 106810, 126230, 135940, 138853, 149534, 176722, 213620, 252460, 271880, 277706, 299068, 353444, 373835, 427240, 441805, 504920, 555412, 598136, 694265, 706888, 747670, 883610, 971971, 1110824, 1388530, 1495340, 1767220, 1943942, 2777060, 2990680, 3534440, 3887884, 4859855, 5554120, 7775768, 9719710, 19439420, 38878840]

約数ペア:

[(1, 38878840), (2, 19439420), (4, 9719710), (5, 7775768), (7, 5554120), (8, 4859855), (10, 3887884), (11, 3534440), (13, 2990680), (14, 2777060), (20, 1943942), (22, 1767220), (26, 1495340), (28, 1388530), (35, 1110824), (40, 971971), (44, 883610), (52, 747670), (55, 706888), (56, 694265), (65, 598136), (70, 555412), (77, 504920), (88, 441805), (91, 427240), (104, 373835), (110, 353444), (130, 299068), (140, 277706), (143, 271880), (154, 252460), (182, 213620), (220, 176722), (260, 149534), (280, 138853), (286, 135940), (308, 126230), (364, 106810), (385, 100984), (440, 88361), (455, 85448), (520, 74767), (572, 67970), (616, 63115), (715, 54376), (728, 53405), (770, 50492), (910, 42724), (971, 40040), (1001, 38840), (1144, 33985), (1430, 27188), (1540, 25246), (1820, 21362), (1942, 20020), (2002, 19420), (2860, 13594), (3080, 12623), (3640, 10681), (3884, 10010), (4004, 9710), (4855, 8008), (5005, 7768), (5720, 6797)]