21625648

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1$

素因数の和:290

約数の個数: 80

約数和(自身を含む): 49996800

約数和(自身を除く): 28371152

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 29, 38, 44, 58, 76, 88, 116, 152, 176, 209, 223, 232, 304, 319, 418, 446, 464, 551, 638, 836, 892, 1102, 1276, 1672, 1784, 2204, 2453, 2552, 3344, 3568, 4237, 4408, 4906, 5104, 6061, 6467, 8474, 8816, 9812, 12122, 12934, 16948, 19624, 24244, 25868, 33896, 39248, 46607, 48488, 51736, 67792, 71137, 93214, 96976, 103472, 122873, 142274, 186428, 245746, 284548, 372856, 491492, 569096, 745712, 982984, 1138192, 1351603, 1965968, 2703206, 5406412, 10812824, 21625648]

約数ペア:

[(1, 21625648), (2, 10812824), (4, 5406412), (8, 2703206), (11, 1965968), (16, 1351603), (19, 1138192), (22, 982984), (29, 745712), (38, 569096), (44, 491492), (58, 372856), (76, 284548), (88, 245746), (116, 186428), (152, 142274), (176, 122873), (209, 103472), (223, 96976), (232, 93214), (304, 71137), (319, 67792), (418, 51736), (446, 48488), (464, 46607), (551, 39248), (638, 33896), (836, 25868), (892, 24244), (1102, 19624), (1276, 16948), (1672, 12934), (1784, 12122), (2204, 9812), (2453, 8816), (2552, 8474), (3344, 6467), (3568, 6061), (4237, 5104), (4408, 4906)]