21347760

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:251

約数の個数: 160

約数和(自身を含む): 76995072

約数和(自身を除く): 55647312

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 97, 105, 112, 120, 131, 140, 168, 194, 210, 240, 262, 280, 291, 336, 388, 393, 420, 485, 524, 560, 582, 655, 679, 776, 786, 840, 917, 970, 1048, 1164, 1310, 1358, 1455, 1552, 1572, 1680, 1834, 1940, 1965, 2037, 2096, 2328, 2620, 2716, 2751, 2910, 3144, 3395, 3668, 3880, 3930, 4074, 4585, 4656, 5240, 5432, 5502, 5820, 6288, 6790, 7336, 7760, 7860, 8148, 9170, 10185, 10480, 10864, 11004, 11640, 12707, 13580, 13755, 14672, 15720, 16296, 18340, 20370, 22008, 23280, 25414, 27160, 27510, 31440, 32592, 36680, 38121, 40740, 44016, 50828, 54320, 55020, 63535, 73360, 76242, 81480, 88949, 101656, 110040, 127070, 152484, 162960, 177898, 190605, 203312, 220080, 254140, 266847, 304968, 355796, 381210, 444745, 508280, 533694, 609936, 711592, 762420, 889490, 1016560, 1067388, 1334235, 1423184, 1524840, 1778980, 2134776, 2668470, 3049680, 3557960, 4269552, 5336940, 7115920, 10673880, 21347760]

約数ペア:

[(1, 21347760), (2, 10673880), (3, 7115920), (4, 5336940), (5, 4269552), (6, 3557960), (7, 3049680), (8, 2668470), (10, 2134776), (12, 1778980), (14, 1524840), (15, 1423184), (16, 1334235), (20, 1067388), (21, 1016560), (24, 889490), (28, 762420), (30, 711592), (35, 609936), (40, 533694), (42, 508280), (48, 444745), (56, 381210), (60, 355796), (70, 304968), (80, 266847), (84, 254140), (97, 220080), (105, 203312), (112, 190605), (120, 177898), (131, 162960), (140, 152484), (168, 127070), (194, 110040), (210, 101656), (240, 88949), (262, 81480), (280, 76242), (291, 73360), (336, 63535), (388, 55020), (393, 54320), (420, 50828), (485, 44016), (524, 40740), (560, 38121), (582, 36680), (655, 32592), (679, 31440), (776, 27510), (786, 27160), (840, 25414), (917, 23280), (970, 22008), (1048, 20370), (1164, 18340), (1310, 16296), (1358, 15720), (1455, 14672), (1552, 13755), (1572, 13580), (1680, 12707), (1834, 11640), (1940, 11004), (1965, 10864), (2037, 10480), (2096, 10185), (2328, 9170), (2620, 8148), (2716, 7860), (2751, 7760), (2910, 7336), (3144, 6790), (3395, 6288), (3668, 5820), (3880, 5502), (3930, 5432), (4074, 5240), (4585, 4656)]