81319700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{179}}^1$

素因数の和:270

約数の個数: 144

約数和(自身を含む): 224985600

約数和(自身を除く): 143665900

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 50, 55, 59, 70, 77, 100, 110, 118, 140, 154, 175, 179, 220, 236, 275, 295, 308, 350, 358, 385, 413, 550, 590, 649, 700, 716, 770, 826, 895, 1100, 1180, 1253, 1298, 1475, 1540, 1652, 1790, 1925, 1969, 2065, 2506, 2596, 2950, 3245, 3580, 3850, 3938, 4130, 4475, 4543, 5012, 5900, 6265, 6490, 7700, 7876, 8260, 8950, 9086, 9845, 10325, 10561, 12530, 12980, 13783, 16225, 17900, 18172, 19690, 20650, 21122, 22715, 25060, 27566, 31325, 32450, 39380, 41300, 42244, 45430, 49225, 52805, 55132, 62650, 64900, 68915, 73927, 90860, 98450, 105610, 113575, 116171, 125300, 137830, 147854, 196900, 211220, 227150, 232342, 264025, 275660, 295708, 344575, 369635, 454300, 464684, 528050, 580855, 689150, 739270, 813197, 1056100, 1161710, 1378300, 1478540, 1626394, 1848175, 2323420, 2904275, 3252788, 3696350, 4065985, 5808550, 7392700, 8131970, 11617100, 16263940, 20329925, 40659850, 81319700]

約数ペア:

[(1, 81319700), (2, 40659850), (4, 20329925), (5, 16263940), (7, 11617100), (10, 8131970), (11, 7392700), (14, 5808550), (20, 4065985), (22, 3696350), (25, 3252788), (28, 2904275), (35, 2323420), (44, 1848175), (50, 1626394), (55, 1478540), (59, 1378300), (70, 1161710), (77, 1056100), (100, 813197), (110, 739270), (118, 689150), (140, 580855), (154, 528050), (175, 464684), (179, 454300), (220, 369635), (236, 344575), (275, 295708), (295, 275660), (308, 264025), (350, 232342), (358, 227150), (385, 211220), (413, 196900), (550, 147854), (590, 137830), (649, 125300), (700, 116171), (716, 113575), (770, 105610), (826, 98450), (895, 90860), (1100, 73927), (1180, 68915), (1253, 64900), (1298, 62650), (1475, 55132), (1540, 52805), (1652, 49225), (1790, 45430), (1925, 42244), (1969, 41300), (2065, 39380), (2506, 32450), (2596, 31325), (2950, 27566), (3245, 25060), (3580, 22715), (3850, 21122), (3938, 20650), (4130, 19690), (4475, 18172), (4543, 17900), (5012, 16225), (5900, 13783), (6265, 12980), (6490, 12530), (7700, 10561), (7876, 10325), (8260, 9845), (8950, 9086)]