21501648

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{257}}^1$

素因数の和:361

約数の個数: 120

約数和(自身を含む): 69870528

約数和(自身を除く): 48368880

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 56, 63, 72, 83, 84, 112, 126, 144, 166, 168, 249, 252, 257, 332, 336, 498, 504, 514, 581, 664, 747, 771, 996, 1008, 1028, 1162, 1328, 1494, 1542, 1743, 1799, 1992, 2056, 2313, 2324, 2988, 3084, 3486, 3598, 3984, 4112, 4626, 4648, 5229, 5397, 5976, 6168, 6972, 7196, 9252, 9296, 10458, 10794, 11952, 12336, 13944, 14392, 16191, 18504, 20916, 21331, 21588, 27888, 28784, 32382, 37008, 41832, 42662, 43176, 63993, 64764, 83664, 85324, 86352, 127986, 129528, 149317, 170648, 191979, 255972, 259056, 298634, 341296, 383958, 447951, 511944, 597268, 767916, 895902, 1023888, 1194536, 1343853, 1535832, 1791804, 2389072, 2687706, 3071664, 3583608, 5375412, 7167216, 10750824, 21501648]

約数ペア:

[(1, 21501648), (2, 10750824), (3, 7167216), (4, 5375412), (6, 3583608), (7, 3071664), (8, 2687706), (9, 2389072), (12, 1791804), (14, 1535832), (16, 1343853), (18, 1194536), (21, 1023888), (24, 895902), (28, 767916), (36, 597268), (42, 511944), (48, 447951), (56, 383958), (63, 341296), (72, 298634), (83, 259056), (84, 255972), (112, 191979), (126, 170648), (144, 149317), (166, 129528), (168, 127986), (249, 86352), (252, 85324), (257, 83664), (332, 64764), (336, 63993), (498, 43176), (504, 42662), (514, 41832), (581, 37008), (664, 32382), (747, 28784), (771, 27888), (996, 21588), (1008, 21331), (1028, 20916), (1162, 18504), (1328, 16191), (1494, 14392), (1542, 13944), (1743, 12336), (1799, 11952), (1992, 10794), (2056, 10458), (2313, 9296), (2324, 9252), (2988, 7196), (3084, 6972), (3486, 6168), (3598, 5976), (3984, 5397), (4112, 5229), (4626, 4648)]