21235808

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:148

約数の個数: 96

約数和(自身を含む): 49496832

約数和(自身を除く): 28261024

約数列:

[1, 2, 4, 8, 11, 16, 22, 23, 32, 43, 44, 46, 61, 86, 88, 92, 122, 172, 176, 184, 244, 253, 344, 352, 368, 473, 488, 506, 671, 688, 736, 946, 976, 989, 1012, 1342, 1376, 1403, 1892, 1952, 1978, 2024, 2623, 2684, 2806, 3784, 3956, 4048, 5246, 5368, 5612, 7568, 7912, 8096, 10492, 10736, 10879, 11224, 15136, 15433, 15824, 20984, 21472, 21758, 22448, 28853, 30866, 31648, 41968, 43516, 44896, 57706, 60329, 61732, 83936, 87032, 115412, 120658, 123464, 174064, 230824, 241316, 246928, 348128, 461648, 482632, 493856, 663619, 923296, 965264, 1327238, 1930528, 2654476, 5308952, 10617904, 21235808]

約数ペア:

[(1, 21235808), (2, 10617904), (4, 5308952), (8, 2654476), (11, 1930528), (16, 1327238), (22, 965264), (23, 923296), (32, 663619), (43, 493856), (44, 482632), (46, 461648), (61, 348128), (86, 246928), (88, 241316), (92, 230824), (122, 174064), (172, 123464), (176, 120658), (184, 115412), (244, 87032), (253, 83936), (344, 61732), (352, 60329), (368, 57706), (473, 44896), (488, 43516), (506, 41968), (671, 31648), (688, 30866), (736, 28853), (946, 22448), (976, 21758), (989, 21472), (1012, 20984), (1342, 15824), (1376, 15433), (1403, 15136), (1892, 11224), (1952, 10879), (1978, 10736), (2024, 10492), (2623, 8096), (2684, 7912), (2806, 7568), (3784, 5612), (3956, 5368), (4048, 5246)]