21222656

素因数分解:

$2^8\times 7^1\times {\mathrm{13}}^1\times {\mathrm{911}}^1$

素因数の和:947

約数の個数: 72

約数和(自身を含む): 52195584

約数和(自身を除く): 30972928

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 182, 208, 224, 256, 364, 416, 448, 728, 832, 896, 911, 1456, 1664, 1792, 1822, 2912, 3328, 3644, 5824, 6377, 7288, 11648, 11843, 12754, 14576, 23296, 23686, 25508, 29152, 47372, 51016, 58304, 82901, 94744, 102032, 116608, 165802, 189488, 204064, 233216, 331604, 378976, 408128, 663208, 757952, 816256, 1326416, 1515904, 1632512, 2652832, 3031808, 5305664, 10611328, 21222656]

約数ペア:

[(1, 21222656), (2, 10611328), (4, 5305664), (7, 3031808), (8, 2652832), (13, 1632512), (14, 1515904), (16, 1326416), (26, 816256), (28, 757952), (32, 663208), (52, 408128), (56, 378976), (64, 331604), (91, 233216), (104, 204064), (112, 189488), (128, 165802), (182, 116608), (208, 102032), (224, 94744), (256, 82901), (364, 58304), (416, 51016), (448, 47372), (728, 29152), (832, 25508), (896, 23686), (911, 23296), (1456, 14576), (1664, 12754), (1792, 11843), (1822, 11648), (2912, 7288), (3328, 6377), (3644, 5824)]