20511184

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{619}}^1$

素因数の和:755

約数の個数: 40

約数和(自身を含む): 42284000

約数和(自身を除く): 21772816

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 109, 152, 218, 304, 436, 619, 872, 1238, 1744, 2071, 2476, 4142, 4952, 8284, 9904, 11761, 16568, 23522, 33136, 47044, 67471, 94088, 134942, 188176, 269884, 539768, 1079536, 1281949, 2563898, 5127796, 10255592, 20511184]

約数ペア:

[(1, 20511184), (2, 10255592), (4, 5127796), (8, 2563898), (16, 1281949), (19, 1079536), (38, 539768), (76, 269884), (109, 188176), (152, 134942), (218, 94088), (304, 67471), (436, 47044), (619, 33136), (872, 23522), (1238, 16568), (1744, 11761), (2071, 9904), (2476, 8284), (4142, 4952)]