21263888

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{619}}^1$

素因数の和:759

約数の個数: 40

約数和(自身を含む): 43821600

約数和(自身を除く): 22557712

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 113, 152, 226, 304, 452, 619, 904, 1238, 1808, 2147, 2476, 4294, 4952, 8588, 9904, 11761, 17176, 23522, 34352, 47044, 69947, 94088, 139894, 188176, 279788, 559576, 1119152, 1328993, 2657986, 5315972, 10631944, 21263888]

約数ペア:

[(1, 21263888), (2, 10631944), (4, 5315972), (8, 2657986), (16, 1328993), (19, 1119152), (38, 559576), (76, 279788), (113, 188176), (152, 139894), (226, 94088), (304, 69947), (452, 47044), (619, 34352), (904, 23522), (1238, 17176), (1808, 11761), (2147, 9904), (2476, 8588), (4294, 4952)]