28748720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1$

素因数の和:403

約数の個数: 160

約数和(自身を含む): 89994240

約数和(自身を除く): 61245520

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 80, 88, 91, 104, 110, 112, 130, 140, 143, 154, 176, 182, 208, 220, 260, 280, 286, 308, 359, 364, 385, 440, 455, 520, 560, 572, 616, 715, 718, 728, 770, 880, 910, 1001, 1040, 1144, 1232, 1430, 1436, 1456, 1540, 1795, 1820, 2002, 2288, 2513, 2860, 2872, 3080, 3590, 3640, 3949, 4004, 4667, 5005, 5026, 5720, 5744, 6160, 7180, 7280, 7898, 8008, 9334, 10010, 10052, 11440, 12565, 14360, 15796, 16016, 18668, 19745, 20020, 20104, 23335, 25130, 27643, 28720, 31592, 32669, 37336, 39490, 40040, 40208, 46670, 50260, 51337, 55286, 63184, 65338, 74672, 78980, 80080, 93340, 100520, 102674, 110572, 130676, 138215, 157960, 163345, 186680, 201040, 205348, 221144, 256685, 261352, 276430, 315920, 326690, 359359, 373360, 410696, 442288, 513370, 522704, 552860, 653380, 718718, 821392, 1026740, 1105720, 1306760, 1437436, 1796795, 2053480, 2211440, 2613520, 2874872, 3593590, 4106960, 5749744, 7187180, 14374360, 28748720]

約数ペア:

[(1, 28748720), (2, 14374360), (4, 7187180), (5, 5749744), (7, 4106960), (8, 3593590), (10, 2874872), (11, 2613520), (13, 2211440), (14, 2053480), (16, 1796795), (20, 1437436), (22, 1306760), (26, 1105720), (28, 1026740), (35, 821392), (40, 718718), (44, 653380), (52, 552860), (55, 522704), (56, 513370), (65, 442288), (70, 410696), (77, 373360), (80, 359359), (88, 326690), (91, 315920), (104, 276430), (110, 261352), (112, 256685), (130, 221144), (140, 205348), (143, 201040), (154, 186680), (176, 163345), (182, 157960), (208, 138215), (220, 130676), (260, 110572), (280, 102674), (286, 100520), (308, 93340), (359, 80080), (364, 78980), (385, 74672), (440, 65338), (455, 63184), (520, 55286), (560, 51337), (572, 50260), (616, 46670), (715, 40208), (718, 40040), (728, 39490), (770, 37336), (880, 32669), (910, 31592), (1001, 28720), (1040, 27643), (1144, 25130), (1232, 23335), (1430, 20104), (1436, 20020), (1456, 19745), (1540, 18668), (1795, 16016), (1820, 15796), (2002, 14360), (2288, 12565), (2513, 11440), (2860, 10052), (2872, 10010), (3080, 9334), (3590, 8008), (3640, 7898), (3949, 7280), (4004, 7180), (4667, 6160), (5005, 5744), (5026, 5720)]