20676040

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{137}}^1$

素因数の和:180

約数の個数: 128

約数和(自身を含む): 59616000

約数和(自身を除く): 38939960

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 88, 98, 110, 137, 140, 154, 196, 220, 245, 274, 280, 308, 343, 385, 392, 440, 490, 539, 548, 616, 685, 686, 770, 959, 980, 1078, 1096, 1370, 1372, 1507, 1540, 1715, 1918, 1960, 2156, 2695, 2740, 2744, 3014, 3080, 3430, 3773, 3836, 4312, 4795, 5390, 5480, 6028, 6713, 6860, 7535, 7546, 7672, 9590, 10549, 10780, 12056, 13426, 13720, 15070, 15092, 18865, 19180, 21098, 21560, 26852, 30140, 30184, 33565, 37730, 38360, 42196, 46991, 52745, 53704, 60280, 67130, 73843, 75460, 84392, 93982, 105490, 134260, 147686, 150920, 187964, 210980, 234955, 268520, 295372, 369215, 375928, 421960, 469910, 516901, 590744, 738430, 939820, 1033802, 1476860, 1879640, 2067604, 2584505, 2953720, 4135208, 5169010, 10338020, 20676040]

約数ペア:

[(1, 20676040), (2, 10338020), (4, 5169010), (5, 4135208), (7, 2953720), (8, 2584505), (10, 2067604), (11, 1879640), (14, 1476860), (20, 1033802), (22, 939820), (28, 738430), (35, 590744), (40, 516901), (44, 469910), (49, 421960), (55, 375928), (56, 369215), (70, 295372), (77, 268520), (88, 234955), (98, 210980), (110, 187964), (137, 150920), (140, 147686), (154, 134260), (196, 105490), (220, 93982), (245, 84392), (274, 75460), (280, 73843), (308, 67130), (343, 60280), (385, 53704), (392, 52745), (440, 46991), (490, 42196), (539, 38360), (548, 37730), (616, 33565), (685, 30184), (686, 30140), (770, 26852), (959, 21560), (980, 21098), (1078, 19180), (1096, 18865), (1370, 15092), (1372, 15070), (1507, 13720), (1540, 13426), (1715, 12056), (1918, 10780), (1960, 10549), (2156, 9590), (2695, 7672), (2740, 7546), (2744, 7535), (3014, 6860), (3080, 6713), (3430, 6028), (3773, 5480), (3836, 5390), (4312, 4795)]