21421400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1$

素因数の和:154

約数の個数: 192

約数和(自身を含む): 67495680

約数和(自身を除く): 46074280

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 25, 26, 28, 35, 40, 44, 50, 52, 55, 56, 65, 70, 77, 88, 91, 100, 104, 107, 110, 130, 140, 143, 154, 175, 182, 200, 214, 220, 260, 275, 280, 286, 308, 325, 350, 364, 385, 428, 440, 455, 520, 535, 550, 572, 616, 650, 700, 715, 728, 749, 770, 856, 910, 1001, 1070, 1100, 1144, 1177, 1300, 1391, 1400, 1430, 1498, 1540, 1820, 1925, 2002, 2140, 2200, 2275, 2354, 2600, 2675, 2782, 2860, 2996, 3080, 3575, 3640, 3745, 3850, 4004, 4280, 4550, 4708, 5005, 5350, 5564, 5720, 5885, 5992, 6955, 7150, 7490, 7700, 8008, 8239, 9100, 9416, 9737, 10010, 10700, 11128, 11770, 13910, 14300, 14980, 15301, 15400, 16478, 18200, 18725, 19474, 20020, 21400, 23540, 25025, 27820, 28600, 29425, 29960, 30602, 32956, 34775, 37450, 38948, 40040, 41195, 47080, 48685, 50050, 55640, 58850, 61204, 65912, 69550, 74900, 76505, 77896, 82390, 97370, 100100, 107107, 117700, 122408, 139100, 149800, 153010, 164780, 194740, 200200, 205975, 214214, 235400, 243425, 278200, 306020, 329560, 382525, 389480, 411950, 428428, 486850, 535535, 612040, 765050, 823900, 856856, 973700, 1071070, 1530100, 1647800, 1947400, 2142140, 2677675, 3060200, 4284280, 5355350, 10710700, 21421400]

約数ペア:

[(1, 21421400), (2, 10710700), (4, 5355350), (5, 4284280), (7, 3060200), (8, 2677675), (10, 2142140), (11, 1947400), (13, 1647800), (14, 1530100), (20, 1071070), (22, 973700), (25, 856856), (26, 823900), (28, 765050), (35, 612040), (40, 535535), (44, 486850), (50, 428428), (52, 411950), (55, 389480), (56, 382525), (65, 329560), (70, 306020), (77, 278200), (88, 243425), (91, 235400), (100, 214214), (104, 205975), (107, 200200), (110, 194740), (130, 164780), (140, 153010), (143, 149800), (154, 139100), (175, 122408), (182, 117700), (200, 107107), (214, 100100), (220, 97370), (260, 82390), (275, 77896), (280, 76505), (286, 74900), (308, 69550), (325, 65912), (350, 61204), (364, 58850), (385, 55640), (428, 50050), (440, 48685), (455, 47080), (520, 41195), (535, 40040), (550, 38948), (572, 37450), (616, 34775), (650, 32956), (700, 30602), (715, 29960), (728, 29425), (749, 28600), (770, 27820), (856, 25025), (910, 23540), (1001, 21400), (1070, 20020), (1100, 19474), (1144, 18725), (1177, 18200), (1300, 16478), (1391, 15400), (1400, 15301), (1430, 14980), (1498, 14300), (1540, 13910), (1820, 11770), (1925, 11128), (2002, 10700), (2140, 10010), (2200, 9737), (2275, 9416), (2354, 9100), (2600, 8239), (2675, 8008), (2782, 7700), (2860, 7490), (2996, 7150), (3080, 6955), (3575, 5992), (3640, 5885), (3745, 5720), (3850, 5564), (4004, 5350), (4280, 5005), (4550, 4708)]